Sweet Pea Seed - Royal Family Mix


Lathyrus odoratus

A favorite of hummingbirds, this hardy old-time variety is well loved for it's easy to grow, sweet smelling, multi-colored blossoms. Sweet peas love cool, moist weather and can be planted very early. 6' plants should be trellised or be allowed to cascades over hanging baskets. Don't eat them though, sweet peas are poisonous! Full sun. Annual.
How to Grow
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Approx. Seeds per Packet 
Average packet weight 
Seeds / gram 
Average seed / oz
404 grams 
Planting SeasonIdeal Soil TempSunFrost Tolerance
After Last Frost65-80°FFull SunFrost Sensitive
Sowing MethodSeed DepthDirect Seed SpacingDays to Harvest
Direct Seed1"3"90
Mature SpacingDays to SproutProduction CycleSeed Viability
6-12"10-21Annual2-3 years


Site Selection

Sweet pea is a cool season annual that prefers full sun to partial shade and rich, well-drained soil with moderate moisture.


For best germination, nick the hard seed coat prior to planting. Direct seed outdoors in early spring. Plants will tolerate a light frost. Optimum soil temperature for germination is 65-80˚F. Sow 1" deep and 3" apart. Seeds will sprout in 10-21 days. Thin so mature plants are 6-12" apart.

To reduce disease, avoid overhead watering and do not plant legumes in the same location year after year.