Trees & Shrubs Archives

Saturday, March 14, 2026

Dutch Elm Disease

By Dorothy Dobbie American elms and Dutch elm disease The native elm bark beetle, Hylurgopina rupifes, and the smaller European

In the wintertime, black knot infections become increasingly apparent. Black knot is a fungus, Apiosporina morbosa, that colonizes members of

1. The lungs of the world. Trees produce oxygen in exchange for carbon dioxide. A large tree puts out enough

1. Clingstone or freestone. When you eat a peach and the flesh comes neatly away from the pit, that is

1. The roots don’t reach to China. Many tree planting failures can be traced to digging the planting hole too

1. They are so pomaceous! Pome is from the Latin word for fruit, pomun, but in our world, we apply

Highbush cranberry grows wild just about everywhere in Canada.

Lowbush cranberry The lowbush cranberry (Vaccinium macrocarpon) is a North American plant, related to the blueberry, that grows naturally in

Chokecherry fruit 1. Not the same. Chokecherries and chokeberries look quite similar to the untrained eye and they both taste

New life for old shrubs Nearly all well-established gardens have at least one old shrub which is often ignored until

The bronze birch bark borer and the birch leaf miner Several pests attack birch trees, especially those that are under