A recent gardening error?
In late summer 2011, I stupidly pruned our "Endless Summer" and "Blushing Bride" hydrangeas. So last year there were very few blooms. (The previous 2 years they were outstanding in terms of flower production). I know these hydrangeas are advertised as being able to bloom on new and old wood but it really does seem to me that the old wood is the key. I kick myself for losing 1 season (at least?) of those wonderful flowers. I have my fingers crossed that they will be back on track in terms of flowering this 2013 season.
Confession is good for the soul...so where have you erred in the garden?