How to prune sweet pea 'cupani'

Pinch tips when seedlings reach 4–6 inches; deadhead continuously throughout flowering season (late spring to midsummer). Pinch the main growing tip just above a leaf node to encourage lateral branching. Once flowering begins, snap or snip spent flower stems at their base daily or every few days to prevent seed set and prolong bloom.

Deadhead every few days during flowering; pinch once at establishment. Sweet Pea 'Cupani' benefits from regular deadheading to extend flowering. Remove spent blooms as soon as petals drop to prevent seed pod formation, which signals the plant to stop flowering. Pinch out the growing tips of young plants at 4–6 inches to encourage bushy, multi-stemmed growth with more flower-bearing side shoots.

Pinch the main growing tip just above a leaf node to encourage lateral branching. Once flowering begins, snap or snip spent flower stems at their base daily or every few days to prevent seed set and prolong bloom.