I absolutely love forsythia. Years ago I was given forsythia branches and told that I could plant them directly into the ground and have my own. Well, I have done this many times and been successful in that the tree/shrubs have grown well, BUT they have never flowered well. Those yellow flowers are why I planted them!!!!!!
I prune them back since they grow really long branches, but since they were originally branches and not plants with roots, do you think this is why they don't seem to flower or grow in the shape of a typical shrub? Granted I do not have a lot of full sun space, but they are in the sunniest spots on my property.
Should I yank them out, start anew and buy new potted forsythia or does anyone recommend cutting them down to the ground (when?, Spring, Summer or Fall?) and see if this helps establish proper growth shape and flowering for next year?