You're trimming too late. Try April, or just after the blossoms
fall. In your situation, don't prune this year.

On 2 May 2005 07:28:29 -0700, wrote:

This is the second year that forsythia have not bloomed. Midstate NY,
zone 5 ... 50 ft row ....six to eight foot high, 20+ years established
...they get trimmed back every summer by mid Aug at the latest so as
not to clip off next year's flower buds ...but parts that haven't
required trimming also haven't bloomed.

Is this environmental ie our area had winter conditions not conducive
to blooming?

TIA,
Stew Corman from sunny Endicott