John from Richmond, Va writes
I had been spraying maple trees with Spectro 90 as a fungal preventative and decided to use what was left to spray hydrangeas to prevent leaf spot. A few days later some of the hydrangea tips had turned black and curled up.
Cleary's Spectro 90 WDG is labeled for hydrangeas as long as you use correctly per product label it should not harm your hydrangea buds
Answer last updated on: 05/06/2021
