how to make pale wisteria more blue

Question

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?

Answer 1

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.