my sister has a large forsythia bush that needs a few ft. trimmed down. should i do this now(dec.8) or wait till spring?
Lackawanna County Pennsylvania
I would wait till after it flowers in the spring. Otherwise you will be removing the buds that are dormant right now. If you really need to shape it - you can remove some of the tall stuff and the lower stems will still have some blossoms - it just won't be as full of flowers.