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When to Plant Spinach in Logan County, OK

Spinach is a nutrient-packed cool-season green that grows quickly in spring and fall. It is rich in iron, vitamins, and antioxidants and excellent raw or cooked.

Logan County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 3 and the first fall frost is November 3, giving you a growing season of approximately 214 days.

At an elevation of 982 feet, Logan County receives approximately 26.8 inches of rainfall annually with predominantly loam soil. Summer highs average 93ยฐF, providing good warmth for Spinach during the growing season.

Logan County, OK (Zone 7a) Long season
214 days
Last Spring Frost April 3
214 growing days
First Fall Frost November 3

Logan County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (119 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Apr 27 – Jun 29
Recommended (50%) ✓ Fits season (116 days to spare)
Start indoors: Feb 27 Transplant: Apr 3 🍅 Harvest: May 8 – Jul 10
Safe Start (90%) ✓ Fits season (118 days to spare)
Start indoors: Mar 14 Transplant: Apr 18 🍅 Harvest: May 23 – Jul 25

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
0.5″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,083 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Spinach needs ~839 GDD — county provides 4,226 GDD Excellent fit

Spinach Planting Timeline โ€” Logan County, OK

Spinach Planting Calendar

Activity When Date Range
Start Indoors February 27 Feb 27 โ€“ Mar 13
Transplant Outdoors April 3 Apr 3 โ€“ Apr 17
Direct Sow March 20 Mar 20 โ€“ Apr 10
Fall Sowing August 25 Aug 25 โ€“ Sep 8
Harvest May 8 May 8 โ€“ Jul 10

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

35โ€“50 days

Soil pH

6.5 โ€“ 7.5

USDA Zone

Zone 7a

Growing Season

214 days

Growing Tips for Logan County

Direct sow as soon as soil can be worked in spring. Plant in partial shade for summer crops to delay bolting. Succession plant every 2 weeks for continuous harvest.

Companion Planting

Good Companions

Level Up Your Garden

๐ŸŒพ Save Your Own Spinach Seeds
Life Cycle Annual
Pollination Wind Pollinated
How to Collect Let plants bolt. Harvest seed stalks when seeds turn tan.
Storage Store airtight; viable 5 years at 35ยฐF, under 45% humidity.

Wind pollinated โ€” isolate 1/2 mile for purity. Easy to let bolt in heat.

Frequently Asked Questions

When should I plant Spinach in Logan County, OK?

Logan County is in Zone 7a with an average last frost of April 3. Plan your Spinach planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Logan County, OK?

Logan County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 3 and first fall frost is November 3.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Logan County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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