Tuesday, June 25, 2019

Loquat - Eriobotrya japonica

The Loquat - Eriobotrya japonica is most easily recognized by the combination of large coarsely toothed, heavily veined, dark green leaves and large flowering panicles with yellow or orange fruit. It is an evergreen shrub or small tree that reaches heights of 9-20 feet high on average. The crown is dense, rounded and somewhat vase shaped. The Eriobotrya is a small genus of only 30 species of evergreen shrubs or trees that are native to mostly Asia.

Image Citation: Howard F. Schwartz, Colorado State University, Bugwood.org

The bark is brownish gray, smooth and somewhat hairy. The leaves are alternate, simply toothed, stiff, leathery, obovate or elliptical, with coarsely toothed margins and parallel veins. The upper leaf surface is lustrous, dark green, hairless, with a paler lower surface. The flowers are 10-15 mm in diameter with 5 petals in an oval or circular form. The flowers are a creamy white color with a sweet fragrance, borne in conspicuous branches and hairy terminal panicles. The flowers appear is late Autumn to early Winter. The fruit is a yellow, orange or whitish pomme, that is pear shaped or oblong with 1-2 large seeds. The fruit matures in Spring to early Summer.

Image Citation: Howard F. Schwartz, Colorado State University, Bugwood.org

The Loquat was originally introduced from East Asia and is now found on disturbed sites from South Florida to South Louisiana, and cultivated into the southern portion of North Carolina. The Loquat is considered to be somewhat invasive in some portions of Florida.

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Monday, June 24, 2019

Chickasaw Plum - Prunus angustifolia

Chickasaw Plum - Prunus angustifolia, is a thicket-forming small tree that has an early blooming habit and folding leaves. It is deciduous and reaches heights of only 20 feet tall.  It grows in an erect fashion with multiple trunks and a thicket forming habit.  It is native to the United States from New Jersey to Pennsylvania in the North to Florida, Nebraska, Colorado and New Mexico in the South and West.    Commonly found on roadsides, in old fields, sandy clearings, rural homesteads, thickets, in open woods, dunes pastures from 0-600 m.

Image Citation:  Chris Evans, University of Illinois, Bugwood.org

The bark is a dark reddish brown to gray, splitting but not exfoliating.  The leaves are alternate, simple, lanceolate, narrowly elliptic or oblong, upward folding from the mid rib, with a wedge shaped base.  The upper leaf surface is lustrous, bright green, hairless with a dull under surface. The flowers are 7-10 mm in diameter, 5 petals, 10-20 stamens each, with white filaments.  The fruit is ovoid or ellipsoid red or yellow drupe, 1.5-2.5 cm in diameter.  The fruit is considered to be pleasant tasting and can be used for making wine, jam and jellies.

Image Citation: Karan A. Rawlins, University of Georgia, Bugwood.org

The thickets are used by cattle for shading and protection from the summers heat.  When thickets form a majority of a cattles grazing area they tend to gain weight faster.  Thorned thickets are a popular plantings for songbirds and game bird nesting and roosting.   The fruit is eaten by numerous birds and small animals.  Lesser prairie-chickens use the cover of the thickets for cooling during the day.  Fire can damage the thickets but does not generally kill the plantings.

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Thursday, June 20, 2019

Gray Birch - Betula populifolia Marshall

The Gray Birch - Betula populifolia Marshall, is most easily distinguished by it's triangular leaf with flattened base, elongated tip and doubly toothed margins.  It is a deciduous tree that reached heights of about 40 feet.  Generally growing in a multi trunk, curving or leaning fashion it makes for a beautiful focal point in both residential and commercial landscape settings.  

Image Citation: T. Davis Sydnor, The Ohio State University, Bugwood.org

The bark of the Gray Birch is red-brown when young, becoming a gray or chalky white when mature.  The bark is smooth and tight, not usually exfoliating like some other Birch (Betula) varieties.  The leaves are alternate, simply shaped, thin and pendulous.  The triangular leaves are often compared in size and shape to those of the Quaking Aspen.  Leaf color ranges from a lustrous green in the Spring to a yellow or yellow-orange in the Fall.  The flower appears in late Spring in the form of a cylindrical catkin.  The fruit is a winged samara with wings broader then the body, they are borne in a narrow, bluntly pointed, erect or drooping structure.

Image Citations (Bark & Leaves): T. Davis Sydnor, The Ohio State University, Bugwood.org

The Gray Birch is native to the North East and Mid Eastern portions of the United States and extreme South Eastern portions of Canada.  It can be found from North Carolina and Virginia in the South, Illinois and Indiana in the West, New Brunswick, Quebec and Ontario in the North.  It prefers moist, well drained, rocky or sandy forests, abandoned sites (fields, pastures) and can often be found on natural reforestation sites that have been burned, or cleared.  Hybrids of the Gray Birch and Mountain Paper Birch are often called Blue Birch .  

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Wednesday, June 19, 2019

Pomegranate - Punica granatum

The Pomegranate - Punica granatum, is most often distinguished by the spiny branches, opposite clustered leaves, large showy flowers and very unique fruit.  It occurs in a deciduous shrub or small tree form, with a single short trunk and rounded crown that reaches an average height of only 8-25 feet tall.  The bark is brownish gray with thin smooth bark that becomes rougher with age.   The young twigs are angled at first but become rounded with maturity.  The leaves are simple, opposite, elliptic, oblong and clustered with a narrowly wedged shaped base and a blunt tipped point.  The upper surface of the leaves are a lustrous deep green with a pale underside.  The flowers are bisexual with fused sepals that form a tube, they are fleshy, reddish with 5-9 petals that are red, orange, yellow or white.  The flowers appear in late spring to summer.  

Image Citation: Karan A. Rawlins, University of Georgia, Bugwood.org

The fruit from the Pomegranate is rounded red, red-yellow, or red-brown with a white leathery berry that is 5-12 cm in diameter.  The fruit matures in the Fall.  Pomegranates are grown for both ornamental and food purposes and have been for centuries, the fruit is even mentioned in both the Bible and Quran.  It is said that the calyx on the fruit was even the inspiration for King Solomon's crown.  
Image Citation: USDA ARS Photo Unit, USDA Agricultural Research Service, Bugwood.org

The Pomegranate originated in the region that is known today as Iran and cultivated since ancient times throughout the entire Mediterranean region.  It was introduced to first Spanish America in the late 16th century and later into California and Arizona.  Today it is cultivated and sparingly established in some of the Southern United States from North Carolina to California.  It is also widely cultivated throughout the Middle East, North Africa, tropical portions of Africa, Central Asia, the Mediterranean Basin, and India.  Recently it has begun to appear in European and and the Western Hemisphere.

Image Citation: Karan A. Rawlins, University of Georgia, Bugwood.org

The fruit has been used for centuries in many different cuisines.  It is used for juices, sauces, as a spice (flavoring), or a topping for desserts or soups.  The seeds of the Pomegranate provide 12% of your daily value of Vitamins C, 16% of your value vitamin K and 10% daily value of folate, they are also an excellent source of dietary fiber at 20% of the daily value (this is entirely contained in the edible seeds).

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Tuesday, June 18, 2019

Rubber Tree - Hevea brasiliensis

The Rubber Tree - Hevea brasiliensis, is also called Sharinga Tree, Rubberwood or Para Rubber Tree.  It was only originally found growing in the Amazon Rainforest but was planted in more widespread tropical and sub-tropical areas once the demand for it's naturally produced rubber increased.  This tree is a member of the Euphorbiaceae family and has major economic value because of it's milky latex that naturally occurs within the tree.  Recorded uses of this and similar tree rubber/latex products date back to the Olmec people of Mesoamerica some 3600 years ago.  By the late 1800's rubber plantations were established in the British colonies, Java, and Malaya.  Today most rubber plantations outside of the native region occur in tropical portions of South/East Asia and West Africa. Cultivating in South America has not been satisfactory because of leaf blight this leaf blight is a major concern for plantations worldwide as it has not been cured or corrected and is thought to pose a threat to all varieties/clones growing today.

Image Citation: David Cappaert, Michigan State University, Bugwood.org

This latex that occurs in the Rubber Tree is the primary source of natural rubber, it occurs in vessels within the bark just outside of the phloem. The vessels spirals up and around the tree in a right handed helix pattern forming an angle of about 30 degrees and occurring at heights of up to 45 feet.  In the wild the tree has been found to reach heights upwards of 100 feet, but this is not very common.  Trees grow at a much slower rate once they are tapped for latex and are generally cut down after about thirty years as they usually stop producing at this point so they no longer have economical value.  When harvesting cuts are made in the vessels but only deep enough to tap into them without harming the trees growth.  In order to grow these trees require tropical or sub-tropical climates, with no chance of frost.  One simple frost event can completely wipe out a plantation and be detrimental to production as the rubber becomes brittle and breaks.  Latex production is not very reliable the amount and quality is variable from tree to tree. When a tree is tapped (the process is called rubber tapping) the latex is collected in small buckets and looks almost similar to the process used to collect syrup from Maple trees.

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Monday, June 17, 2019

Solanaceae (Nightshade Family) Tomatoes, Potatoes

In the family Solanaceae (Nightshade Family) there is a genus called Solanum it contains 1500-2000 varieties of herbs, shrubs and trees. Of these varieties two are major food crops in North America, Potato and Tomato and another less Popular including Eggplant. In other regions there are varieties such as the Ethiopian eggplant, Gilo (S. aethiopicum), Naranjilla or Lulo (S. quitoense), Turkey Berry (S. torvum), Pepino (S. muricatum), Tamarillo and Bush Tomatoes (which includes several Australian species). Most of the members of this family are native to the American Tropics, 65 occur in North America (only 35 are native). Even though two of our largest food crops are included in this genus most of the green parts of the plants and unripened fruits are poisonous, but some bear edible parts in the form of fruit, leaves or tubers. Also included in this genus are Nightshades, Horse Nettles and many other plants cultivated for their ornamental flowers and fruits. The species grows in various habits including annual, perennial, vine, subshrub, shrub and even small trees.

Image Citation: Bruce Ackley, The Ohio State University, Bugwood.org - Subject: Buffalobur (Solanum rostratum) Dunal
Image Citation:  Leslie J. Mehrhoff, University of Connecticut, Bugwood.org  - Subject: Bittersweet nightshade (Solanum dulcamara) L.

Most of the plants have green simply shape leaves that are ovate or elliptic. Flowers can range in color depending on the variety but generally have 5 petals. The fruits can vary from small and insignificant to large and very visable - berries, tomatoes, potatoes, and eggplants. Some produce fruit from the leaves while other grow underground (like the potato). Many plants in the Solanum genus are an important food source for the larvae of some Lepidoptera species (Butterflies and Moths), these include various Angle shades (Phlogophora meticulosa), various members of the Bedellia species, the Cabbage Moth (Mamestra brassicae), Common swift (Korscheltellus lupulina), Garden dart (Euxoa nigricans), Ghost moth (Hepialus humuli), Tobacco hornworm (Manduca sexta), Tomato hornworm (Manduca quinquemaculata), and Turnip moth (Agrotis segetum) to name a few.

Image Citation: J. Jeffrey Mullahey, University of Florida, Bugwood.org Subject: Tropical Soda Apple (Solanum viarum) Dunal

Food Crop production in the Solanum genus is extremely important throughout the world. In 2013, the recorded world production of Tomatoes was 163.4 million tonnes, with China producing 31% of the total, followed by India, the United States and Turkey. In 2012, Tomato production was estimated to be valued at 59 billion dollars, making it the eighth most valuable agricultural product worldwide. In 2013, the recorded world production of Potatoes was 368 million tonnes. Two thirds of the global production is eaten by humans, the remaining third is consumed by animals or used in starch production. Potatoes remains an essential crop in Europe, where per capita production remains the highest in the world. The most rapid expansion over the past few decades has occurred in southern and eastern Asia. As of 2007, China led the world potato production, and nearly a third of the world's potatoes were harvested between China and India. It is believed that the geographic shift in potato production has been moved from wealthier countries toward low income areas of the world because it is a cheap and plentiful crop that is able to grow in wide varieties of climates and locales. Only about 5% of the world's Potato crop are traded internationally because of the perishability. In 2013, the recorded world production of Eggplants was 49.4 million tonnes, 57% of which came from China, 27% from India, Iran, Egypt and Turkey were also major producers all total account for 97% of the world production. More than 4,000,000 acres are devoted to the cultivation of eggplants in the world.

Image Citation: John Cardina, The Ohio State University, Bugwood.org - Subject: Bittersweet nightshade (Solanum dulcamara) L.
Image Citation: Keith Weller, USDA Agricultural Research Service, Bugwood.org - Subject: Potato (Solanum tuberosum) L.
Image Citation: Peggy Greb, USDA Agricultural Research Service, Bugwood.org - Subject: Potato (Solanum tuberosum) L.

Many members of the Solanaceae:Nightshade family members can be grown in your own landscape some in your vegetable garden and others in you flower gardens. With 1500-2000 varieties and counting I am sure you can find one that is right for you! Hardiness zones vary by plant and within the family can range from zones 4-12.

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Friday, June 14, 2019

Ginkgo Tree - Ginkgo Biloba

The Ginkgo Tree - Ginkgo Biloba - is the survivor of all arboreal survivors. There were Ginkgo trees when dinosaurs walked the Earth. The sole remnant of a group of plants even more primitive than Conifers. It is a living fossil, and fossils relating to the modern Ginkgos dating back 270 million years. They were wiped out completely in North America by the Glaciers,and thought to at one time be extinct in the wild the world over. They however thrived in China where the Buddhist monks tended to them in their gardens. When growing in the wild , they are found infrequently in deciduous forests and valleys with fine silty soil. It has long been cultivated in China and is now common in the southern third of that country. They were exported to England in 1754 and to the U.S. about 30 years later, cultivated in both countries for over 200 years it has failed to become significantly naturalized in either.

Ginkgos are also known as Maiden Hair trees, and sometimes referred to by a variation in spelling on the name -Gingko/Gingo/Ginko. They grow to be very tall, they average between 60-100ft, with some specimens in China reaching over 160 ft tall. The tree has an angular crown and long, somewhat erratic branches. This tree is deep rooted which makes it tolerant to wind and snow damage. They grow best in moist soil, but are known to be very tolerant. Young specimens are often tall, slender, and sparcely branched, but with age the crown broadens. In the fall the leaves will turn a bright yellow before they fall often within as short a span as 15 days. Their combination of disease resistance, insect resistant wood, and their ability to form aerial roots/sprouts make them very longed lived. Some specimens in China are claimed to be over 2500 years old.

Being Dioecious, Ginkgos are either male or female. Males produce small pollen cones. Females do not produce cones, instead two ovules are formed at the end of a stalk and after pollenation one or both develop into seeds. The seed is 1-2 cm long, the outer layer is a yellowy brown flesh that is soft and fruit-like. It is attractive in appearance but contains butanoic acid (or butyric acid). The males are generally preferred in urban landscapes because the fruits from the females tend to be messy when they fall onto sidewalks and have a peculiar odor from the butanoic acid (often compared to a strong cheese). The kernel/seed (or Silver Nut) inside the fruit is considered a delicacy in the Orient. The fertilization of a Ginkgo occurs via motile sperm (as in Cycads, ferns, or moss), the sperm have a very complex structure. They adapt well in urban environments, tolerating pollution as well as confined soil space, for this reason as well as just being a beautiful tree they are often planted in streetside setting.

Used in both culinary and medicinal settings, the Ginkgo is thought by some to have health benefits and is also considered by others to be an aphrodisiac. However when eaten in large quantities for a number of years (especially by children) the meat of the seed can cause poisoning. Others are sensitive to the chemical in the outer fleshy part of the fruit, having symptoms similar to poison ivy. The extract of Ginkgo leaves contains flavonoid glycosides and terpenoids and have been used pharmaceutically. Medical trials have shown Ginkgo to be moderately effective in improving symptoms in dementia patients, but not in preventing the onset of Alzheimer's disease in the average person. Used primarily as a memory and concentration enhancer, and anti-vertigo agent, even though some studies differ in results about its effectiveness. Ginkgos are truly an amazing species of tree all on their own, surviving and adapting for hundred of millions of years.

Image Citations (Photos 1 & 2) : Jan Samanek, State Phytosanitary Administration, Bugwood.org

Thursday, June 13, 2019

Sourwood Tree - Oxydendrum arboreum

The Sourwood Tree - Oxydendrum arboreum is very unique as it is the only species in it's genus. This genus is a part of the larger Ericaceae Family, which is commonly called the Heath or Heather Family. The Ericaceae family is made up of a very diverse group of plants including Heather, Azaleas, Rhododendron and Madrones.

Image Citation: Richard Webb, Self-employed horticulturist, Bugwood.org 

The Sourwood has grey bark with deep lobes that almost make the bark appear chunky. The leaves are very finely toothed and a smooth grey-green in color during the growth season and a bright red, crimson or even purple in the fall. The leaves are arranged alternately and average 3-8 inches long. The flowers are white or ivory in color and bell shaped, they are very small only 1/4 to 1/3 of an inch each. The flowers though small on their own grow on 6-10 inch long panicles. The fruit are small downy, five sided/angled woody capsules that are ivory in color. The roots of the Sourwood are considered shallow, this tree grows best with little to no root competition. It prefers very acidic soil and will not tolerate . The wood of the Sourwood is heavy, hard and close grained. This type wood takes well to high gloss finish. Honey produced from the flowers of this tree is considered by many to be unmatched by clover, orange blossom, or any other honey.

Image Citation: Franklin Bonner, USFS (ret.), Bugwood.org 

It is native to Eastern United States, ranging in the North from Pennsylvania and in the South from Western Louisiana, Mississippi, Alabama, and Northwest Florida. It is found most commonly in the lower chain of the Appalachian Mountain. Recommended for hardiness zones 5-9, this tree is a medium sized deciduous tree that makes for a lovely ornamental addition to any landscape. With a maximum height of 35-70 feet and a spread of 20 feet it's size allows it to fit in places where some other shade trees will not.

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Wednesday, June 12, 2019

Scarlet Oak - Quercus coccinea

The Scarlet Oak - Quercus coccinea is most easily identified by it's deeply cut leaves in combination with 1 or more pitted rings at the acorn apex. It is a fast growing deciduous tree that can reach heights of 100 feet tall. Generally growing in an upright fashion with a single erect trunk that is more often then not swollen at the base.  It is native to the Eastern and Mid Atlantic regions of the United States from Maine in the North to Georgia, Mississippi and Alabama in the South, spreading as far West as Wisconsin. It is closely related to the Northern Pin Oak - Quercus ellipsoidalis, Shumard Oak - Quercus shumardii, Northern Red Oak -Quercus rubra and Pin Oak - Quercus palustris.

The crown of the Scarlet Oak is rounded and open with spreading branches.  This Oak has alternate, simply shaped leaves with 5-7 lobes each that range in size from 4-7 inches long. Leaves are bright green in the Spring and Summer and change to a brilliant Scarlet - Red in the Fall. The upper surfaces of the leaves are lustrous and hairless, while the lower is paler with tufts of hair in many of the vein axils. The fruit is a bowl shaped cupped acorn that is 7-15 mm deep enclosing 1/3 - 1/2 of the brown nut. Acorn crops are produced annually, however large crops are only seen every 3-5 years.The bark is thin, brown to dark gray in color, finely ridged and furrowed in texture.

Image Citation: (Fall Foliage) T. Davis Sydnor, The Ohio State University, Bugwood.org

The Scarlet Oak is often planted for a combination of it's rapid growth, beautiful foliage, soil tolerance, wind resistance and upright habit. It makes for a lovely focal point in any landscape. Scarlet Oak prefers well drained slopes, dry uplands, ridges, and even does well in poor soils (except akaline). Full sun is recommended for best performance (6 hours of direct sunlight daily). The best performance for the Scarlet Oak naturally seems to be in the Ohio River Valley where specimens are many in number, long lived and lovely in shape. It also is a very successful part of the South Appalachian forest story. Scarlet Oak is recommended for hardiness zones 4-9 and can be found at most larger nurseries. It is widely used in park settings, along roadside and in residential and commercial landscape design. The Scarlet Oak is the official tree for The District of Columbia. Scarlet Oak acorns are an important food source various types of wildlife including, songbirds, wild turkeys, grouse, squirrels and white-tailed deer.

Image Citation: (Acorns) David Stephens, Bugwood.org

Image Citation: (Canopy from below) David Stephens, Bugwood.org

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Tuesday, June 11, 2019

Leitneriaceae Family - Corkwood - Leiterneria floridana

The Leitneriaceae Family currently only contains one single species, the Corkwood Leiterneria floridana.  The Corkwood is a very sporadically distributed species found only in Northern Florida, Southeastern Texas, Eastern Arkansas and the far Southeastern region of Missouri.  It is most commonly found growing in swamp areas, depressions, ponds, roadside ditches or bordering tidal marshes.  It is easily recognized in it's native regions by it's very upright form combined with elliptical leaves, catkins, and tan colored lenticels found within the red-brown bark.   The Leitneriaceae florida is included on The IUCN Red List of Threatened Species as a "Near Threatened/Lower Risk" species because of its very small number (limited by a very small native range), thought they do not show a significant decline in the population.  Leiterneria floridana was only first discovered in 1835, in the saline marshes of Florida where the Apalachicola River empties into the Gulf of Mexico.

Image Citation: J.S. Peterson, hosted by the USDA, NRCS. 2016. The PLANTS Database (http://plants.usda.gov, 24 February 2016)

The Corkwood is a small deciduous tree or shrub that only averages 15 feet in height at maturity.  Corkwoods always grow in a very upright form and generally have one single straight trunk with a narrow crown containing very few branches.  The leaves appear in alternately in simple narrow elliptical form.  The upper portions of each leaf is lustrous, leathery and medium green in color, while the lower surface is a more dull pale green.  The leaves have fine hairs on the surface when young, becoming hairless when mature.  The foliage is among the most persistent of the deciduous autumn leaves, remaining green till late November (in the more northern portions of it's range), then becoming greenish-yellow. The flowers are unisex with male and female flowers on separate plants.  The male flowers appear in upright grey-brown catkins that are 2-5 cm long,  while the female appear in reddish catkins that are 1-2 cm long.  The fruit occurs in a single seeded ellipsoid drupe that is yellow-brown in color.  The wood of the Corkwood is very fitting to it's name as it is extremely lightweight.  The wood is often compared to balsa wood and can be used in similar applications.  Corkwood is the lightest weight of all of the native Eastern North American trees.  Portions of the trunk/stems have even been used to craft fishing floats.

The Corkwood - Leiterneria floridana is not the same as the shrub also commonly known as Corkwood - Stillingia aquatica (of the Euphorbiaceae family).  The genus, Corkwood Leiterneria floridana is thought by many researchers to be related to the similarly pollenated quassia family (Simaroubaceae), though they retain very unique and identifiable features that easily separate the two.

In Italy a single compressed endocarp was collected from the Villa San Faustino site in Italy.  This single specimen shows that until the Early Pleistoncene period Leitneria venosa grew there.  Leitnera is also listed as a species found within the early Pliocene San Gimiginiano flora. Several other similar endocarps have been found on other sites in Northern Italy dating all the way up to the Cenozoic period, though rare. These fossils shows that the Leiterneria family was not always made up of this one single species but had other members with possibly a greater range then the Leiterneria floridana.

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Monday, June 10, 2019

American Plum - Prunus americana

American Plum - Prunus americana is best recognized by the combination of flaking scaly bark, sharply toothed leaf margins and red or yellow fruit.  It is a deciduous shrub or small tree that is capable of reaching heights of around 25 feet.  Generally it grows in an erect form with a single trunk, the young shoots are often thorn tipped.  

Image Citation: Vern Wilkins, Indiana University, Bugwood.org

The bark is smooth and reddish brown with horizontal lenticels that becomes tan, buff or grey with age.  The leaves are alternate, simple, elliptical, and oblong with a rounded base.  They are green in color with a hairless upper and lower surfaces, and blades that are 4-12 cm long.  The flower is generally 20-25 mm in diameter with 5 petals.  Generally the flowers are white in color and may become pink with age, they appear in Mid Spring to Early Summer.  The fruit is a rounded or ellipsoid, red, orange, or yellow drupe.  The fruit appears in late summer and is often glaucous with a white waxy blush on the surface.  

Image Citation: Paul Wray, Iowa State University, Bugwood.org

The American Plum is native throughout the Eastern United States and continuing West through the Rocky Mountain region.  It prefers rich, moist, loamy soils, open woods, woodland margins, fence line and stream banks.  American Plum is sometimes considered to be thicket forming in woodland areas, though it is believed these thickets are formed by seedlings rather than root suckers.  American Plum can be found at most nurseries in the native region.  Currently there are over 260 varieties that have been developed from the American Plum which greatly improve the reach of it's growth range.
Image Citation: T. Davis Sydnor, The Ohio State University, Bugwood.org

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Friday, June 7, 2019

Bear Oak-Quercus ilicifolia

The Bear Oak-Quercus ilicifolia is a small deciduous tree that is most easily identified by it's love of rocky habitat and leaves with a hairy lower surface. It grows in a small tree or gangly shrub form with a densely rounded crown. It does not exceed 40 feet tall but only averages around 15-20 feet tall and generally has one or more short contorted trunks.

Range map/Image Citation: By Elbert L. Little, Jr., USGS - USGS Geosciences and Environmental Change Science Center: Digital Representations of Tree Species Range Maps from "Atlas of United States Trees" by Elbert L. Little, Jr. (and other publications), Public Domain,https://commons.wikimedia.org/w/index.php?curid=29177004

The leaves are Alternate, simple, ovate or elliptic with a wedge shaped base and shallow margins. The upper leaf surface is dark green and slightly lustrous while the lowers are paler and visibly hairy. The fall leaf coloring starts as a yellow green but changes to a lovely yellow with the season. The fruit is an acorn, with a cup that is 10-17 mm deep enclosing 1/4 to 1/2 of the nut. The nut of the acorn is egg shaped with very faint vertical striping. Acorns are often produced in large abundant crops, probably as a result of the harsh conditions that the tree grows in. Bear Oak is monoecious, with both male and female flowers being found on the same plant.  Male flowers are catkins and female flowers are borne in clusters or singly, the female flowers are produced on current-year's growth

Image Citation: Will Cook, Carolina Nature.com published 2010-https://www.carolinanature.com/trees/quil.html

The Bear Oak is native to the North Eastern United States and can be found from Ontario to Main in the North and West Virginia to Virginia in the South.  Bear Oak can be found growing in CT, DE, ME, MD, MA, NH, NJ, NY, NC, PA, RI, VT, VA, and WV. It prefers dry soils, mountainous terrain and rocky outcroppings. Individual above ground trunks or stems of the Bear Oak are not long living. Maturing to only about 20 years of age, they arise from one single long lived taproot that can be as thick as 20 cm in diameter and reach as deep down in the ground as 3 feet.  The Bear Oak is adapt to hybridizing with various members of the Red Oak family.  The Bear Oak species is considered threatened in North Carolina and is on the Endangered list in Vermont.

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Tuesday, June 4, 2019

Common Pricklyash - Zanthoxylum americanum

The Common Pricklyash - Zanthoxylum americanum or the Toothache Tree as it is also called. Is best recognized by the combination of alternate pinnate leaves with paired prickles, and occasional paired prickles at the leaflet nodes and clusters of greenish yellow flowers. It is a small deciduous, thicket forming, slender tree that usually only reaches heights of 20-35 feet tall. It is native to the Northeastern, Central and Mid-Atlantic United States with occasional specimens found as far South as Florida. It prefers moist or dry woodlands and rich soils from 0-600 m, it is widespread in the East.

Image Citation: Paul Wray, Iowa State University, Bugwood.org

The leaves are alternately pinnate with blades that are 15-20 cm long, petioles that are 3-6 cm long and 5-11 leaflets each. The upper leave surface is a medium to dark green that is lustrous in sheen, while the lower surface is paler and hairy. The flower of the Common Pricklyash is unisex or bisexual with the male and female generally occurring on different plants. Each flower contains 4-5 green to yellow petals with fringed tips and 2-5 pistils that are produced in small axillary clusters in the Spring-Summer season. The fruit is a fleshy brown pod with 1-2 shiny black seeds each, the fruit matures.

Image Citation: Paul Wray, Iowa State University, Bugwood.org

The Hercules club is considered to be the most similar species to the Common Pricklyash, though it's prickles are more stout and irregularly scattered, they are similar in appearance and often confused for one another by the untrained eye.

Meet more trees on our website www.ArundelTreeService.com or www.MeetaTree.com

Monday, June 3, 2019

Yellowwood Tree - Cladrastis kentukea

The Yellowwood Tree - Cladrastis kentukea, is a medium sized deciduous member of the legume family.  With it's smooth elephant grey bark, pendulous fragrant flowers, and red/brown stems it offers beauty to any landscape year round.  It is native to the Eastern United States, most notably two very small areas, one runs along the Kentucky and Tennessee border, and the other between Missouri, Arkansas and Oklahoma.  It is commonly planted in landscapes from New England south to Washington DC & Virginia.   Yellowwood is hardy from zones 4a to 8b and can be purchased from most large nurseries in the Eastern US.  

The leaves are composed of widely spaced leaflets that are alternate not opposite one another. There are usually 9-11 leaflets per leaf.  The leaves are a yellow green in Spring, bright green by Summer and then Yellow in the Fall.  The wood of this tree contains a Yellow dye which stains the heartwood, hence the name Yellowwood. 

The flowers of the Yellowwood are very similar to Wisteria, they grow in a pendulous form and feature white fragrant flowers.  The flowers are small and grow on open panicles ranging from 10-15 inches long.   They are considered to be highly fragrant and appear in May.  The flowers give way to long brown seed pods as the Spring Summer season changes.

Image Citations (Photos 1-3): Missouri Botanical Gardens - https://www.missouribotanicalgarden.org/ 
 (This is a great site for plant/tree information and id help)

When mature this tree can reach heights of 30-50 feet and a spread of 40-55  feet wide.  It is considered to be virtually pest free and quite hardy in it's native range.  This tree is easily transplanted in B&B or bareroot up to 2 inches in caliper.
The Society of Municipal Arborist named this tree the "2015 Urban Tree Of The Year", this selection was made based on it's adaptability and strong ornamental traits.   

Meet More Trees : www.ArundelTreeService.com   or   www.MeetaTree.com