We have a 15+-year-old wisteria in our front yard here in Pittsburgh (Northeast). It gets late afternoon sun and has performed well over the years...but this year is very strange.
The plant was absolutely covered with flowers (and bumblebees!) this spring. Beautiful! However, now - in late spring - the flowers are all but gone ( and the bees), but the plant has not produced leaves to any degree....and the remaining flowers are turning brown. This has never happened before and it has become somewhat of an eyesore.
We are on the verge of cutting the plant way back, but thought we would ask here before doing anything drastic.
Please see pictures. HELP.