How to prune sweet pea 'spencer'

Pinch seedlings at 4–6 inches; deadhead continuously from first bloom through midsummer. Pinch the growing tip above the second or third leaf pair to promote multiple stems. Remove faded flowers by cutting or snapping the stem back to the main vine before seed pods swell — even one mature pod will trigger early dormancy.

Deadhead every 2–3 days during flowering; pinch once at establishment. Sweet Pea 'Spencer' is a vigorous climber needing the same treatment as other annual sweet peas: pinch young plants to encourage bushiness and deadhead obsessively once flowering starts. The large, frilled Spencer blooms set seed quickly, so removing spent flowers every two to three days is essential to keep the plant producing through summer.

Pinch the growing tip above the second or third leaf pair to promote multiple stems. Remove faded flowers by cutting or snapping the stem back to the main vine before seed pods swell — even one mature pod will trigger early dormancy.