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When to Plant Malabar Spinach in St. Francis County, AR

Malabar spinach is a tropical vine with thick, succulent leaves that taste similar to spinach. Unlike true spinach, it thrives in heat and humidity.

St. Francis County, Arkansas is in USDA Zone 7b. The average last spring frost is March 20 and the first fall frost is November 9, giving you a growing season of approximately 234 days.

At an elevation of 1,429 feet, St. Francis County receives approximately 51.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88ยฐF, providing good warmth for Malabar Spinach during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Malabar Spinach root diseases.

St. Francis County, AR (Zone 7b) Long season
234 days
Last Spring Frost March 20
234 growing days
First Fall Frost November 9

St. Francis County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (136 days to spare)
Start indoors: Jan 22 Transplant: Mar 26 🍅 Harvest: May 21 – Jun 18
Recommended (50%) ✓ Fits season (136 days to spare)
Start indoors: Jan 30 Transplant: Apr 3 🍅 Harvest: May 29 – Jun 26
Safe Start (90%) ✓ Fits season (135 days to spare)
Start indoors: Feb 19 Transplant: Apr 23 🍅 Harvest: Jun 18 – Jul 16

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
1.5″/week
Rainfall provides
0.9″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,210 gal / 100 sq ft
Malabar Spinach needs ~1,000 GDD — county provides 3,744 GDD Excellent fit

Malabar Spinach Planting Timeline โ€” St. Francis County, AR

Malabar Spinach Planting Calendar

Activity When Date Range
Start Indoors January 30 Jan 30 โ€“ Feb 13
Transplant Outdoors April 3 Apr 3 โ€“ Apr 17
Direct Sow March 27 Mar 27 โ€“ Apr 17
Harvest May 29 May 29 โ€“ Jun 26

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

High โ€” keep soil consistently moist

Days to Maturity

55โ€“70 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 7b

Growing Season

234 days

Growing Tips for St. Francis County

Direct sow after last frost or start indoors. Provide a trellis for the vigorous vines. Harvest young leaves regularly; older leaves become mucilaginous when cooked.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Malabar Spinach in St. Francis County, AR?

St. Francis County is in Zone 7b with an average last frost of March 20. Plan your Malabar Spinach planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is St. Francis County, AR?

St. Francis County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is March 20 and first fall frost is November 9.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help St. Francis County gardeners in Zone 7b 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 St. Francis County, AR. Local conditions may vary. Last updated: April 2026.