Why won't my hydrangeas bloom?

Hi!

THREE COMMON REASONS MOPHEAD HYDRANGEAS FAIL TO BLOOM:

1. A late spring freeze arrives and ruins the developing bloom buds. The freeze may be light and even go unnoticed until one realizes that the blooms are not forming. Or it may kill all the emerging leaves, too. As a result, most of the new growth comes from the roots. When this occurs, you know you have a problem.

   Most flower buds develop on the old stems. Once these stems are damaged in a late freeze, new flowers will not appear until the following year and only then if it is a milder spring. (This is the rule for the vast majority of mopheads [macrophyllas] but there are exceptional hydrangeas that will bloom despite this damage)

2. Improper pruning.

3. Planted in wrong zone. If you have had the bad luck to plant a hydrangea that has not bloomed after the first year you planted it, you may finally have to concede that this particular variety is not cold hardy in your area. Another variety may succeed famously. ‘Endless Summer and ‘Blushing Bride’ are two wonderful hydrangeas that will bloom almost anywhere. If your hydrangea has never bloomed, don’t give up hope.

I hope this helps!