Hydrangas not blooming

Question

My hydrangas have several buds on them, but they don’t open. What would be wrong???

Answer 1

When they are not opening fully, then this is usually a sign that there is a lack of potassium and phosphorus in the soil. You can, either, amend the soil with a topdress of compost, or add something higher in phosphorus and potassium, such as potassium phosphate.

This article help you with the care of hydrangeas in the meantime: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/growing-hydrangeas-hydrangea-care-guide.htm