igniter dances on the shimmering yellow leaves of the birch tree in autumn , but yellow folio at other times of the yr are no movement for celebration . Several native coinage of betula grace waterways and northern woodland in the U.S. Although they thrive in wet soil and cold mood , their robustness does not offer to a few impuissance that cause leaves to yellow . luckily , most problems can be effectively addressed with proper ethnical care .

Types

Sweet , white-haired , yellow-bellied and newspaper birch rod are aboriginal tree that range from the Northeast across the Midwest and northern grade of the U.S. The river birch rod is aboriginal throughout the Mississippi catchment area and from USDA zone 4 through most of 6 . The whitespire birch is more rut tolerant than other varieties . European white , weeping birch and the whitebarked Himalayan birch are non - aboriginal varieties .

Features

Birches choose moist , slimly acidic soils and will raise 40 to 50 feet improbable . Although the tree prefer a sunny photograph , their shallow roots require shaded soil , do mulch a necessity in plate landscape . River birch ( and its varietal , Heritage birch tree ) are repellent to the bronze birch borer ; other aboriginal form are passably resistant but non - native variety are all quite susceptible .

Pests

Birch leaf mineworker and bronze birch stone drill are the main insect pest affecting birch trees . Early stages of folio mineworker and birch bore bit attacks may show up as spotty yellow blotch . Leaves will turn dark-brown as folio miner infection advance ; birch borer infections will ensue in the dying of the tree . Leaf rust fungus , leaf fleck and anthracnose are viruses that get icteric blotches and spots that finally plow leafage .

Stress

Birch trees experience significant stress from transplantation and many potpourri can not tolerate heat . birch are also capable to emphasis due to lack of piss or when forage maturate underneath the Sir Herbert Beerbohm Tree competes with their shallow roots for nutrients . These forms of stress can exhibit themselves in pale or yellow folio .

Chlorosis

Solutions

right watering , mulching and spring fertilization with a dumb - release nitrogen fertilizer all cut down on tension and make infections and infestations less probable . Amending soil so that it drains well but retains wet helps lessen the likeliness of greensickness . imbed a tree that is native to an area also lessen the likelihood of emphasis and the yellowing that it stimulate .

References

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