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Landscaping & Nursery Information for Home Gardeners

BIRCH--CLUMPS

Birches are usually clumped in multiples of three, four or five for appearance sake. Clumping usually produces a tree with a crown or top growth equal to a single tree with three smaller trunks.

Single trees can be clumped easier when smaller than as larger plants. If single plants are to be clumped, carefully remove some of the soil around the root system before planting. Water thoroughly after planting.
 

BIRCH--YELLOW LEAVES

Yellow leaves on birch trees can be a sign of several problems:

1. Lack of moisture. Birches are shallow rooted trees and require anywhere from 1 to 3 inches of water per week depending on soil types (more on sandy, less on clay) and temperatures (more during hot weather, less in cool periods).

2. Iron chlorosis. Birches require a slightly acidic soil. Check the pH level; ideally birches thrive between 5.5 and 6.5.
 

BIRCH BORERS

Bronze birch borer generally affects white bark birch trees. River birches are seldom infected. D-shaped holes from on the trunk or branches of trees where adult beetles have emerged. Top branches of the tree start dying, due to the feeding of the borer larvae on the phloem and cambium tissues of the plant.

See also pests

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