Growing Sweet Peas in Zone 4
When to plant and harvest sweet peas in Zone 4— based on your zone's frost dates.
Zone 4 sits comfortably within sweet peas' best range (Zones 3–8), so it grows well here on a standard schedule.
Sweet Peas planting calendar for Zone 4
These months are derived from Zone 4's frost dates — last frost around Early – mid May, first frost around Mid September – mid October.
Start indoors
—
Sow outdoors
April
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 4: FAQs
Can you grow sweet peas in Zone 4?＋
Zone 4 sits comfortably within sweet peas' best range (Zones 3–8), so it grows well here on a standard schedule.
When should I plant sweet peas in Zone 4?＋
In Zone 4, sow outdoors around April. Zone 4's last spring frost is typically Early – mid May and its first fall frost around Mid September – mid October, which sets the planting window.
When to harvest sweet peas in Zone 4?＋
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 4 overview →
Frost dates, climate, and everything to grow here.
June in Zone 4 →
What to sow, transplant, and harvest this month.