InForum gardening columnist Don Kinzler answers why a kohlrabi has begun growing bulges, the best time to prune lilacs and where to get soil tested. A reader asks gardening columnist Don Kinzler why ...

December is midwinter, and can be a risky time for pruning. Any pruning of trees and shrubs has to be done at the right time, if at all, during the month. But there are some plants you should never ...

CORVALLIS — The lush fragrance of lilacs defines late spring. These beauties are as durable as they are lovely. They are cold hardy, city-tough and not picky about soil. They make vigorous tall ...

Many plants benefit from some type of pruning, whether it's a conservative reshaping or a harder cut to rejuvenate. One plant that benefits greatly from pruning is the lilac shrub. Over time, lilacs ...

With winter approaching, your gardening to-do list is filled with maintenance tasks, like raking leaves, mulching plants, and removing snow. You might consider pruning trees, too—but not all of them ...