A Kousa dogwood – 5 years old – looks healthy
why does my kousa not bloom?
I've read that it can take up to 7 years for dogwood to bloom. On the other hand, there are many growing practices that affect blooming. Dogwoods need watering during dry spells all the way through fall. Flower buds are formed the previous year so if you see signs of heat or drought stress, the buds are the first to suffer and the tree may not set any buds if summer has been difficult. Blooming is best in a site with at least 4 hours of direct sunlight. Remember that tree roots go past the drip line: don't put any lawn chemicals or fertilizers over the root zone. (Too much nitrogen from lawn fertilizer will spur green growth in the tree at the expense of flowers.) https://www.gardeningknowhow.com/ornamental/trees/dogwood/dogwood-tree-not-flowering.htm