I planted 2 blue everblooming hydrangeas on either side of a pink weeping cherry. What can I feed them without hurting the other? They need something and they are well established but the blooms are getting smaller on each.
How to Feed My Hydrangeas and Weeping Cherry
Certified GKH Gardening Expert
You can feed them both a high phosphorous and potassium fertilizer. They will both benefit from this. To keep the blue blooms on the hydrangea, you may have to do a little extra to them. Depending on the method that you choose, you might bring harm to the trees. This article will give you more information: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/change-hydrangea-color.htm