Sweet Peas - Key Growing Information

A close-up of heirloom sweet pea flowers; early sowing is the secret to growing success.
DAYS TO GERMINATION: 14-21 days at 55-65°F (13-18°C)

SOWING: Transplant (recommended) - Sow into 72-cell flats 1/4– 1/2" deep, 4-5 weeks before planting out. Darkness is required for germination. Direct seed - 6 weeks before last frost. Seedlings won't be damaged by light frost. Pinch when 6-8" tall to encourage denser branching and more flowers.

LIGHT PREFERENCE: Sun.

PLANT HEIGHT: Varies. Support such as Hortonova vertical trellis is needed to support plants.

PLANT SPACING: 6".

HARDINESS ZONES: Annual.

STEM LENGTH: 6-16".

VASE LIFE: 4-6 days. Sweet Peas do not store well, but if necessary store at a temperature of 36-39°F (2-4°C).

HARVEST: Half the flowers on a stem are open. Harvesting flowers increases blooms.

SOIL REQUIREMENTS: Rich, deep, loamy, moist, well-drained soil. 6-7 pH preferred.
TIP: Using white on black plastic or straw mulch will help keep roots cool and plants productive for a longer period.

USES: Cut flower, back of borders, fences, trellises, arbors, and cottage gardens.

SCIENTIFIC NAME: Lathyrus odoratus