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Sweet Peas - Key Growing Information
DAYS TO GERMINATION: 14-21 days at 55-65°F (13-18°C). To aid germination, seeds can be presoaked for 24 hours in room temperature water prior to planting.
SOWING: Transplant (recommended) - Sow 1/4- 1/2" deep into 72-cell flats or preferred deep-cell seedling container, 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. Trellis support is required.
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 the plants productive for a longer period.
USES: Cut flower, backs of borders, fences, trellises, arbors, and cottage gardens.
SCIENTIFIC NAME: Lathyrus odoratus