River birch tree catkins draw such songbirds as redpolls and pine siskins. River birch also has a good autumn colour in shades of buttery yellow. River birch put out catkins in the spring which can remain until autumn, adding to the splendor of its yellow fall color. The trees are tolerant of excessive water but require full sun for proper growth. catkins ; male flowers are 2" to 3" in bloom, 0.75" prior to bloom ; female flowers are 1" to 1.5" long ; male catkins usually in 3's ; Fruit . Birches make great trees for a medium-sized garden, With their attractive bark, light canopy and elegant catkins, birches make great trees for a medium-sized garden. Photo by Jane Hill. The pointy leaves turn an outstanding yellow in the fall. They are wind and ice tolerant, adding to their value in the landscape. This species is resistant to bronze birch borer (BBB). It also has a more intriguing, salmon-colored, bark. Paper Birch Catkins: Winged Nutlets & Bracts Dispersing. The river birch produces separate male and female flowers in the form of catkins. The fruit is not ornamentally significant. Family Betulaceae . The flowers appear from April to May. Consider using soaker hoses and bark mulches to keep the root zones cool and moist. In the spring they mature as the leaves develop, becoming pendulous. River Birch Catkins . catkins of small nutlets ; Bark. Growing river birch . Smooth in young trees, the bark gets rugged at the base in older trees. River Birch in Montgomery Co., Maryland (3/31/2020). Male flowers pendulous catkins, female flowers short, erect catkins, TIME OF YEAR: Different parts different times of the year. eastern US; zones 4-9. Photo by Karan A. Rawlins, University of Georgia, Bugwood.org. Golden brown on twigs and young branches, the bark matures to silvery white with black clefts. The River Birch is a large tree which is a welcome inclusion in planting schemes in which tree in wet or boggy ground when choice may otherwise be limited to utility trees with less ornamental qualities. Dried River Birch Catkins . Female catkins are smaller, short, bright green and erect. Extra Information. Better disease and insect resistance than other birch species; also very resistant to bronze birch borer. Betula pendula, commonly called silver birch or European white birch, is a graceful medium-sized tree with slender pendulous branches and attractive bark. On this occasion we will not dedicate the article to talk in general about birch tree, but we will focus on specifically covering two of the most popular varieties, the River Birch and the Silver Birch. Oval to pyramidal when young becoming rounded to irregular with age. Native to the swamps and river banks of NE America, Betula nigra grows well on wet ground. This is the only birch native to lowland areas of the southeastern US, and it is typically found in wet areas such as floodplains of rivers and streams. Advertisement With a choice of 35 species globally, and many cultivars, there are options for both wet and dry soils. Dark green foliage turns a beautiful buttery yellow in the fall. River birch (Betula nigra): Sometimes called black birch, this species has a much darker trunk than the paper birch, but still has the characteristic flaky surface. Betula nigra (River Birch) is a bushy deciduous tree prized for its incredible peeling bark. History/Lore. Genus Betula can be deciduous trees or shrubs, usually colouring well in autumn and often with striking white, pink, or peeling brown bark; separate male and female catkins open before or with the leaves in spring . zone 4; in the wild, limited to moist areas and is most commonly found along stream banks and areas that flood; Habit and Form . It is the only native birch that does well in low elevations of the south. This habit might not please neighbors. The male and female flowers are produced individually in the form of Catkins and are produced around April and May. ENVIRONMENT: Floodplains and wooded stream banks. Birch twigs, leaves, and catkins. They are self-fertilizing and require only an individual specimen to produce seed. River birches are available in single stem or the more attractive multi-stem forms. River Birch features subtle chartreuse catkins in early spring. Adapts well to heavy clay soils of Missouri and will tolerate poor drainage. Catkins on a river birch are 1.5 inches long. Betula nigra, or River Birch, is a deciduous, upright, flowering tree with cinnamon brown, exfoliating bark and yellow fall foliage that tends to drop off the tree quickly. River birch is a medium-sized tree with an irregular, broad, spreading crown. Foliage turns golden in fall. not the best birch for fall color ; Flowers. River Birch is a deciduous tree with a more or less rounded form. How to Grow Birch Trees. Also, a great enticement to songbirds are their small but plentiful seeds. It often has multiple trunks. River birches are also resistant to bronze birch borer; other pest may cause minimal damage. Attractive salmon-pink to reddish-brown bark exfoliates to reveal lighter inner bark. It features subtle chartreuse catkins in early spring. The peeling brown bark is extremely showy and adds significant winter interest. Growth Habit. Birch Tree Catkins, White Birch Catkins Showing Good Year, we have many images of Birch Trees The foliage is eaten by deer and other browsers. Medium to fast growth rate. River Birch Betula nigra Birch family (Betulaceae) Description: This tree is 40-90' at maturity, often forming a trunk that divides early and developing an irregular crown. Pollination results in the birch's fruit, small cones that are packed with hairy seeds. Prefers moist, acidic, fertile soils including semi-aquatic conditions, but also tolerates drier soils. Birches, including river birch, can be messy -- their male flowers are long, drooping catkins that drop through late spring and early summer. Betula nigra is an Iowa native. Female flowers: erect catkins ½- to 1½-inch tall. River Birch has dark green foliage throughout the season. The peeling brown bark is extremely showy and adds significant winter interest. The foliage is eaten by deer and other browsers. It is the only Birch found a low altitudes in the southeastern United States. 'Heritage' is one of the most common varieties that grows faster, has larger, glossier leaves, and is more disease resistant than the straight species. While thousands of seeds can be produced from a single tree, few will germinate. There are many varieties of birch trees – paper, gray, yellow, river, and white birch – though the paper birch is perhaps the most distinctive, with its curling white bark. 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