Growing Sweet Peas in Zone 1
When to plant and harvest sweet peas in Zone 1— based on your zone's frost dates.
Zone 1 is colder than sweet peas' usual range (Zones 3–8). Expect to lean on indoor starts, containers, or row covers — or treat it as a short-season experiment.
Sweet Peas planting calendar for Zone 1
These months are derived from Zone 1's frost dates — last frost around Late May – mid June, first frost around Late July – mid August.
Start indoors
—
Sow outdoors
May
Transplant
—
Harvest
—
Sweet Peas care at a glance
- Sunlight
- Full sun (6+ hours); afternoon shade in heat
- Water
- 1 inch per week, consistent
- Spacing
- 6 in apart
- Days to maturity
- 75–90 days to first bloom
- Best zones
- 3–8 (cool-season annual; sow in fall in mild zones)
Growing sweet peas in Zone 1: FAQs
Can you grow sweet peas in Zone 1?＋
Zone 1 is colder than sweet peas' usual range (Zones 3–8). Expect to lean on indoor starts, containers, or row covers — or treat it as a short-season experiment.
When should I plant sweet peas in Zone 1?＋
In Zone 1, sow outdoors around May. Zone 1's last spring frost is typically Late May – mid June and its first fall frost around Late July – mid August, which sets the planting window.
When to harvest sweet peas in Zone 1?＋
Harvest timing depends on your planting date and variety — sweet peas typically matures in 75–90 days to first bloom. See the full guide for harvest cues.
Full Sweet Peas guide →
Complete care, problems, companions, and harvest tips.
Zone 1 overview →
Frost dates, climate, and everything to grow here.
June in Zone 1 →
What to sow, transplant, and harvest this month.