Horticultural Planning Records Est. data · NOAA 1991–2020 · USDA 2023

Flower · Fabaceae

How to Grow Sweet Pea (Flower)

Cool season Frost hardy Full sun
Days to maturity 75–90
Spacing 6"
Plants / sq ft 2
Season Cool

Planting Sweet Pea (Flower)

Sweet Pea (Flower) is a cool season flower in the Fabaceae family. Getting the timing right is the difference between a strong stand and a disappointing one, so the windows below are given relative to your own last spring frost and first fall frost rather than a generic calendar date. Look up your local frost dates and count back or forward from there.

Sweet Pea (Flower) is started indoors 6–8 weeks before your last spring frost date, giving seedlings a head start before they move outside.

You can sow Sweet Pea (Flower) directly into the garden 2–4 weeks before your last frost.

Sweet Pea (Flower) can be grown by direct sowing and starting indoors. Starting indoors gives the longest, most controlled season, while direct sowing is simplest where the season is long enough.

Spacing and Planting Depth

Give Sweet Pea (Flower) room to mature. The figures below come from verified extension and seed-supplier data for typical varieties.

Spacing in row6 inches
Row spacing12 inches
Plants per sq ft2
Planting depth1 inches
Sun requirementFull sun

Days to Maturity

Sweet Pea (Flower) reaches maturity in 75–90 days from transplant.

Sweet Pea (Flower) is ready to harvest after about 83 days. Harvest before summer heat or, for fall crops, before a hard freeze, to keep quality high.

Conditions and Care

As a cool-season flower, Sweet Pea (Flower) does its best growing in the cooler weather of spring and fall and tends to bolt or turn bitter in summer heat. It is frost hardy and can shrug off light freezes, so it can stay in the ground later into the season than tender crops.

Sweet Pea (Flower) needs full sun — give it at least six hours of direct light a day for the best growth and flavor. Sow seed about 1 inch deep, then keep the soil evenly moist until seedlings establish.

Sweet Pea (Flower) belongs to the Fabaceae family; rotating where you grow members of this family each year helps limit the build-up of soil-borne pests and disease. Sweet Pea (Flower) is generally grown as a single planting each season rather than succession sown.

Growing Notes

Fragrant climbing cut flower; ornamental only — seeds toxic.

Plan your Sweet Pea (Flower) schedule

Sweet Pea (Flower) is typically grown as a single planting per season rather than succession sown. Plan your full garden →

Data sources
  • Johnny's Selected Seeds