When to Plant Squash (Summer) in New Jersey
Zucchini and yellow squash are the garden's most generous producers. You'll be sharing with neighbors by midsummer.
The Short Answer
New Jersey Frost Dates
Your planting dates depend on which part of New Jersey you're in. Here are the frost date ranges by region:
| Region | Zones | Last Frost (Spring) | First Frost (Fall) |
|---|---|---|---|
| Northern New Jersey | 6a, 6b | Apr 20 - May 5 | Oct 5 - Oct 20 |
| Central New Jersey | 6b, 7a | Apr 10 - Apr 25 | Oct 15 - Nov 1 |
| Southern New Jersey | 7a, 7b | Apr 1 - Apr 15 | Oct 20 - Nov 5 |
Squash (Summer) Planting Schedule for New Jersey
Northern New Jersey (Zones 6a, 6b)
Average last frost: Apr 20 - May 5 · Average first frost: Oct 5 - Oct 20
Central New Jersey (Zones 6b, 7a)
Average last frost: Apr 10 - Apr 25 · Average first frost: Oct 15 - Nov 1
Southern New Jersey (Zones 7a, 7b)
Average last frost: Apr 1 - Apr 15 · Average first frost: Oct 20 - Nov 5
Growing Squash (Summer) in New Jersey
Squash (Summer) in New Jersey's Climate
Your warm summers grow spectacular squash. Direct sow or transplant from mid-May. Squash vine borer emerges in late June — monitor stem bases for sawdust-like frass. Many Midwest and mid-Atlantic gardeners plant a second round in early July to replace borer-damaged early plants with clean late-season production.
Soil Considerations for New Jersey
Sandy soils in Pine Barrens. Clay in north. Acidic in south. Rich loam in central agricultural areas. The Garden State for good reason. Make sure soil has warmed to at least 60°F before planting squash (summer) outside.
New Jersey Climate & Growing Season
Moderate climate with maritime influence. Good growing season. Four seasons. Excellent for a wide range of crops. Squash (Summer) cannot tolerate any frost, so wait until all frost danger has passed before transplanting outside. Watch local forecasts carefully in spring.
Growing season length varies across New Jersey: Northern New Jersey (6a, 6b) has a last frost around Apr 20 - May 5, while Southern New Jersey (7a, 7b) sees frost end around Apr 1 - Apr 15. This difference matters for squash (summer) — transplant timing shifts by several weeks across the state.
Growing Tips
Harvest when fruits are 6-8 inches long for best flavor. Larger squash become seedy and tough.
Companion Planting
Plant squash (summer) alongside these companions for better growth:
Keep squash (summer) away from:
The Bottom Line
Last reviewed: March 29, 2026