How to grow sweet pea
Lathyrus odoratus
Get your exact dates
The windows below are relative to your frost dates. Enter your ZIP for the calendar dates.
Open the planting calendarGrowing conditions
- Sun
- Full sun
Common problems
- heat stops bloom
- needs trellis support
Sources
- University of Minnesota Extension: Fragrant Flowers for your Cutting Garden
- University of Illinois Extension: Sweet Pea
Last updated 2026-06-13.