Our Oak Leaf Hydrangea’s Are Not Blooming. We’re Wondering Why.

Question

Receives morning sun and some early afternoon sun, then shade.

Answer 1

Ensure that the dormant flower buds that develop from July-September are not killed by events like the December 22nd attic blast, when temperatures crashed to -8F. Provide winter protection if practical/possible. Make sure your last fertilizer application occurs by/before the 2nd-3rd weeks of July. Do not cut leafless stems until the end of June. Provide 3-4” of organic mulch past the drip line. Avoid nigh nitrogen fertilizers like some formulations of Miracle-Gro.