Non-Flowering Flowering Dogwood
I've had a Cornus florida growing in my backyard now for about seven years. (I'm in USDA Zone 5 - Canadian zone 6a). There is partial shade from some mature oaks nearby but it must be getting about 5 or 6 hours of direct sunlight. I've been watering and feeding it and now it's over 6' tall. However, I've only seen a few flowers on it once - last season. Does anybody have any thoughts on how to rectify this (if possible)?