Your lace cap is an older variety that blooms once--the newer ones re-bloom and they do like water....

Hi Michelle,
Hydrangeas are supposed to be low maintenance, with that being said though - they LOVE water. I know that you can also over water which will also prevent blooming.

I've posted a link which gives information on why hydrangeas don't bloom. Hope it helps.

Mike

Here is a link that might be useful: Why Won't My Hydrangea Bloom