Hydrangea

Question

I have an Annabelle Hydrangea, actually two of them, planted side by side on a slope on the north side of my porch. They get morning full sun and are never completely shaded. They form heads, but never bloom. I have tried fall pruning, no pruning and still get the same results. Any suggestions?

Answer 1

Try increasing the phosphorous level. Best way to do this is working bone meal into the soil.