How to prune wave purple petunia

Midsummer cut-back (late June–July); deadhead as needed throughout the season. Cut back individual trailing stems by one-third using clean scissors, cutting just above a healthy leaf. No need to cut the whole plant at once — work progressively over a week to avoid stress.

Cut back once per season; deadhead as needed. Wave petunias are bred to be largely self-cleaning but still benefit from occasional trimming when stems grow excessively long or flowering slows. Cutting stems back by one-third in midsummer refreshes the plant and extends colour well into autumn. Light deadheading of spent flowers keeps the display tidy between trims.

Cut back individual trailing stems by one-third using clean scissors, cutting just above a healthy leaf. No need to cut the whole plant at once — work progressively over a week to avoid stress.