Joanne in Oshawa, Ontario, asks: How can I eliminate crabgrass? Unfortunately with this year’s drought the only thing growing is crabgrass. So far, I have been digging it out. Judith Adam, horticultural consultant for Garden Making, replies: Crabgrass (Digitaria sanguinalis and D. ischaemum) is an annual weed found in thin or bare areas of lawns. It flowers from July … [Read more...] about How can I eliminate crabgrass?
If you haven’t hilled up your roses that aren’t super hardy, there’s still time. Hilling roses isn’t meant to protect the wood above ground, but to ensure the vulnerable bud union won’t be exposed to severe freezing. That bulgy knob at the base of most rose shrubs is the bud union, where understock roots and grafted scion (or upper canes of the plant) are surgically grafted … [Read more...] about Hilling roses