Dutch Elm Disease
By Dorothy Dobbie American elms and Dutch elm disease The native elm bark beetle, Hylurgopina rupifes, and the smaller European
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trees and shrubs
Black Knot on Cherry Trees
In the wintertime, black knot infections become increasingly apparent. Black knot is a fungus, Apiosporina morbosa, that colonizes members of
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Pruning Shrubs
New life for old shrubs Nearly all well-established gardens have at least one old shrub which is often ignored until
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Common Birch Tree Pests
The bronze birch bark borer and the birch leaf miner Several pests attack birch trees, especially those that are under
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Birch Trees in the Urban Landscape
by Dorothy Dobbie When and where to plant a birch The best time to plant a birch tree is spring
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When to Call an Arborist
Trees are complicated organisms. It is hard to identify a problem without the help of a professional. You need to
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How Trees Communicate
By Dorothy Dobbie Literature and myth abound with stories about trees talking to people and people talking to trees. Many
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Flowering Shrubs
By Dorothy Dobbie I love spring. When the trees and flowering shrubs have shaken off the chills of a Canadian
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