Are your hydrangeas not blooming? Here are some steps to take to ensure your plants bloom year after year!
Step 1 – Early July – Thinning
Remove about 1/3 of the total number of stems, including all horizontal stems on the perimeter of the clump, taking each of these stems down to about 4-6”.
Step 2 – After First Hard Frost – Fall Pruning
Sheer away the top 1/3 of each stem, using the cut stems and leaves as mulch for the clump. Or, cut each stem back to just above the highest flower bud that can be effectively mulched.
Step 3 – Mid November – Mulch
Mulch the entire clump as high as possible with leaves. Top off the mound with fine pine bark mixed with peat moss for added insulation, and to keep the leaves from blowing away.
Step 4 – Early to Mid-April – Remove Mulch
Gently remove all the mulch by hand, being careful not to break off the tender flower buds. Wait for strong new growth before pruning away dead tips – late May to early June.
Step 5 – After the Last Frost – High Nitrogen Fertilizer
Begin monthly applications of a high-nitrogen fertilizer such as dried blood and continue through mid-July or mid-August.
