Pruning Mature White Cedar Trees

I live in Toronto. My back yard has a hedge of 40-50 ft. white cedar trees. The branches have spread 6-8 feet from the truck. I would like to prune the branches back to 4 feet. Will this harm the…

Best time of year for planting trees

How late in fall can one plant a tree (and not a young, skinny one)? When in spring should one plant? Does it depend on the species? What is the best time of year for planting the following trees in…

Acer griseum

Hello. I am doing a presentation on the above tree and want to ask for help in identifying any cultivars or hybrids. Thanks.…

Emerald green cedar turning brown

My landscaper planted several 6-feet cedar last year. Three browned and died. He replaced them last April. Now the same three start to brown again. I watered them everyday in the summer to make sure they are not dry. The…

Caterpillars on redbud

Hello, I have just noticed web-like nests of small yellow caterpillars on the branches and leaves of my Eastern redbud. At the same time, I saw that many of the tree’s leaves have curled/ruffled edges, the veins are yellow and…

Problem with Pagoda Dogwood

I have a multi-stemmed (two main stems) Pagoda Dogwood that I planted about 4 years ago.Last year it was very robust and healthy, but this year the younger ad thinner of the two main stems seems to have much smaller…