My wisteria is flowering well for the first time, but the blooms are very pale. What do I feed it with to make them a more vibrant blue?
How to Make Pale Wisteria More Blue
Certified GKH Gardening Expert
There is no way to change the color of the blooms per say. However, it may be lacking trace minerals, which could be affecting the plant. A soil test at your local extension office is the best way to pinpoint the deficiencies in the soil.