Revitalizing Leggy Petunias: When and How to Cut Back for More Blooms

Why Petunias Become Leggy

As the season progresses, petunia stems elongate, producing flowers only at the tips and leaving bare centers—the classic "old bald man" look.

The July Cutback Technique

Shear plants back to 3–5 inches above the crown in early July. Within 3–4 weeks, new growth emerges and flowering resumes heavily. This also keeps plants compact and bushy.

Fertilizing for Continuous Flowering

Apply a slow-release fertilizer like Osmocote 14-14-14 every 3 months, or a water-soluble feed (Miracle-Gro 15-30-15 or Peters 20-20-20) at 1 tablespoon per gallon every two weeks.

Deadheading and Maintenance Tips

Remove spent flowers regularly. If you'll be away on vacation, cut back before you leave; plants will be blooming upon your return.