How to prune petunia 'wave purple'

Midsummer when plants become leggy, typically 6–8 weeks after planting out. Use scissors or shears to cut trailing stems back by one-third to one-half. Make cuts above a leaf node. Water and feed with a balanced liquid fertilizer after trimming; plants typically rebound and reflower within 2–3 weeks.

Once mid-season as needed; deadhead lightly throughout. Petunia 'Wave Purple' is a trailing, spreading annual that can become leggy and sparse-flowering by midsummer. Trim stems back by about a third to a half mid-season to reinvigorate growth and restore dense flowering. Regular deadheading is less critical than for upright types but still helpful to prevent seed set.

Use scissors or shears to cut trailing stems back by one-third to one-half. Make cuts above a leaf node. Water and feed with a balanced liquid fertilizer after trimming; plants typically rebound and reflower within 2–3 weeks.