How to prune violet petunia

Begin pinching at planting; hard cut-back in midsummer (July). Pinch off spent flowers down to the first set of leaves weekly. In midsummer cut all stems back by one-third to one-half just above a leaf node using clean scissors or shears to stimulate fresh branching.

Deadhead weekly; cut back once or twice per season. Violet petunia benefits from regular deadheading and periodic cutting back to stay bushy and floriferous. Without pruning, stems become leggy and flowering declines sharply by midsummer. Pinch or cut spent blooms weekly, and cut the whole plant back by one-third to one-half in midsummer to trigger a strong second flush of growth and bloom.

Pinch off spent flowers down to the first set of leaves weekly. In midsummer cut all stems back by one-third to one-half just above a leaf node using clean scissors or shears to stimulate fresh branching.