Powdery Mildew

How should raspberry canes be pruned?

A reader asks how to prune the canes of raspberries that produce in July, then a second crop in September/ October.

Hamamelis virginiana, our native witchhazel which blooms in fall, as well as H. vernalis are cold hardy for Edmonton.

Judith Adam responds to reader question about a passion flower plant that’s growing green leaves but not many flowers.

When I bring my rosemary plants into the house for the winter, they get a powdery mildew that kills new growth. How do I treat this?