Growing Zucchini & Summer Squash in Zone 3
When to plant and harvest zucchini & summer squash in Zone 3— based on your zone's frost dates.
Zone 3 sits comfortably within zucchini & summer squash's best range (Zones 3–11), so it grows well here on a standard schedule.
Zucchini & Summer Squash planting calendar for Zone 3
These months are derived from Zone 3's frost dates — last frost around Mid May – early June, first frost around Early September – early October.
Start indoors
March
Sow outdoors
May
Transplant
—
Harvest
July and September
Zucchini & Summer Squash care at a glance
- Sunlight
- Full sun (6+ hours)
- Water
- 1–2 inches per week, deep
- Spacing
- 24–36 in apart
- Days to maturity
- 45–60 days
- Best zones
- 3–11
Growing zucchini & summer squash in Zone 3: FAQs
Can you grow zucchini & summer squash in Zone 3?＋
Zone 3 sits comfortably within zucchini & summer squash's best range (Zones 3–11), so it grows well here on a standard schedule.
When should I plant zucchini & summer squash in Zone 3?＋
In Zone 3, start seeds indoors around March. Zone 3's last spring frost is typically Mid May – early June and its first fall frost around Early September – early October, which sets the planting window.
When to harvest zucchini & summer squash in Zone 3?＋
Expect to harvest zucchini & summer squash in Zone 3 around July and September, depending on the season and variety.
Full Zucchini & Summer Squash guide →
Complete care, problems, companions, and harvest tips.
Zone 3 overview →
Frost dates, climate, and everything to grow here.
June in Zone 3 →
What to sow, transplant, and harvest this month.