How to prune petunia 'supertunia royal velvet'

Midsummer, approximately 6–8 weeks after planting, when stems elongate. Cut all stems back by one-third with clean scissors or shears, cutting just above a leaf node. Remove any clearly dead stems to the base. Water and feed after cutting; regrowth and rebloom follow within 2–3 weeks.

Once mid-season; self-cleaning reduces routine deadheading needs. Petunia 'Supertunia Royal Velvet' is a self-cleaning trailing Supertunia that drops its spent flowers naturally. It still benefits from a mid-season cutback by about a third to prevent leggy bare stems and encourage dense new growth. Feed immediately after trimming with a balanced or high-potassium fertilizer for best rebloom.

Cut all stems back by one-third with clean scissors or shears, cutting just above a leaf node. Remove any clearly dead stems to the base. Water and feed after cutting; regrowth and rebloom follow within 2–3 weeks.