River birch is one of two hosts required by this aphid.
Jul 26, River birch is one of the more trouble-free of the birches, but like any birch, it may fall prey to the birch leafminer (Fenusa pusilla). The symptoms are large blotches on the leaves. The best treatment is a systemic pesticide that targets these insects. These Botanical Name: Betula nigra. River birch leaves and female catkin in fall.
The large sheets of grayish-brown to tan flaking bark exfoliate to expose a tan to creamy-white to salmon-white inner trunk.
Hardiness zone: 4 to 9; Plant in full sun, tolerates heat; Best soil properties for river birch: Sandy to clay soils; Soil pH to Have your soil tested by the U of M Soil Testing Lab; Moist to wet well-drained to poorly-drained soils. Tolerates some dryness and soil.
do river birch trees fall easily? Uses. River birch, as an ornamental tree, offers fall and winter color to parks, yards and street sides. Its leaves turn bright yellow in autumn; in the winter, its showy silver trunk adds beauty to the landscape. You may ask, How do you kill a river birch tree?
You can kill a birch tree slowly by simply driving a large copper nail into the trunk of the tree.