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When to Plant Squash (Summer) in Curry County, OR

Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.

Curry County, Oregon is in USDA Zone 9a. The average last spring frost is March 21 and the first fall frost is November 21, giving you a growing season of approximately 245 days.

At an elevation of 295 feet, Curry County receives approximately 53.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92ยฐF, providing good warmth for Squash (Summer) during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Squash (Summer) root diseases.

Curry County, OR (Zone 9a) Long season
245 days
Last Spring Frost March 21
245 growing days
First Fall Frost November 21

Curry County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (121 days to spare)
Start indoors: Jan 31 Transplant: Mar 7 🍅 Harvest: Apr 25 – Jun 27
Recommended (50%) ✓ Fits season (126 days to spare)
Start indoors: Feb 21 Transplant: Mar 28 🍅 Harvest: May 16 – Jul 18
Safe Start (90%) ✓ Fits season (107 days to spare)
Start indoors: Apr 8 Transplant: May 13 🍅 Harvest: Jul 1 – Sep 2

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 192 gal / 100 sq ft
Squash (Summer) needs ~1,045 GDD — county provides 4,655 GDD Excellent fit

Squash (Summer) Planting Timeline โ€” Curry County, OR

Squash (Summer) Planting Calendar

Activity When Date Range
Start Indoors February 21 Feb 21 โ€“ Mar 7
Transplant Outdoors March 28 Mar 28 โ€“ Apr 11
Direct Sow March 21 Mar 21 โ€“ Apr 11
Harvest May 16 May 16 โ€“ Jul 18

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July Harvest
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

45โ€“65 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 9a

Growing Season

245 days

Growing Tips for Curry County

Direct sow after last frost on mounds. Harvest frequently when fruits are 6-8 inches for best texture. Check plants daily as they grow rapidly in summer heat.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Squash (Summer) in Curry County, OR?

Curry County is in Zone 9a with an average last frost of March 21. Plan your Squash (Summer) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Curry County, OR?

Curry County, Oregon is in USDA Hardiness Zone 9a. The average last spring frost is March 21 and first fall frost is November 21.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Curry County gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Curry County, OR. Local conditions may vary. Last updated: April 2026.