I read somewhere that the best time to prune it is right after it finishes blooming... which that would be now.
The bush is large, tall, lots of branches, and in a shady woodsy area.
Planted long before we moved here. No clue how old it is, but I'd guess the root ball to be too big to fit inside a large laundry basket. So it's going nowhere. ha ha
It did bloom pretty profusely this spring.
Of course before the leaves are on the trees, it gets a lot more sun, which is why it probably is able to bloom like that, despite that I read that it likes full sun.
I want to prune around the outside & bottom, because I'm hoping to clear away some of the weeds & nonsense in that area to make way for more ferns. So I'd like to remove some of the gangly branches on the forsythia.
OTOH, I'm wary about taking height off the forsythia, because I'm guessing that its height is the way it gets enough sun. Plus, it works well to shade the ground for more shady plants. (My husband REALLY likes ferns so I'm trying to find what few places are amenable to them in our yard, and this is the only place they seem to grow on their own.)
The forsythia only gets about 1 hour at most of somewhat filtered sun in the early morning. Then it gets maybe 2 hours at most of dappled sun in the evening. It gets a little more sun nearer to the summer solstice when the sun is setting in a line of sight position.
Soooo... I'm wondering if I could prune it to make it more tall & thin than fat.
Does this make sense? And what are the options or pitfalls here?