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When to Plant Mustard Greens in Crittenden County, AR

Mustard greens are fast-growing brassicas with a spicy, peppery kick. They come in green, red, and purple varieties and are excellent cooked or in salads.

Crittenden County, Arkansas is in USDA Zone 7b. The average last spring frost is March 21 and the first fall frost is November 5, giving you a growing season of approximately 229 days.

At an elevation of 808 feet, Crittenden County receives approximately 45.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93ยฐF, providing good warmth for Mustard Greens during the growing season.

Crittenden County, AR (Zone 7b) Long season
229 days
Last Spring Frost March 21
229 growing days
First Fall Frost November 5

Crittenden County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (133 days to spare)
Start indoors: Feb 7 Transplant: Mar 14 🍅 Harvest: Apr 18 – Jun 20
Recommended (50%) ✓ Fits season (131 days to spare)
Start indoors: Feb 14 Transplant: Mar 21 🍅 Harvest: Apr 25 – Jun 27
Safe Start (90%) ✓ Fits season (132 days to spare)
Start indoors: Mar 5 Transplant: Apr 9 🍅 Harvest: May 14 – 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
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 423 gal / 100 sq ft
Drought risk

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

Mustard Greens needs ~790 GDD — county provides 4,522 GDD Excellent fit

Mustard Greens Planting Timeline โ€” Crittenden County, AR

Mustard Greens Planting Calendar

Activity When Date Range
Start Indoors February 14 Feb 14 โ€“ Feb 28
Transplant Outdoors March 21 Mar 21 โ€“ Apr 4
Direct Sow March 7 Mar 7 โ€“ Mar 28
Fall Sowing August 27 Aug 27 โ€“ Sep 10
Harvest April 25 Apr 25 โ€“ Jun 27

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Transplant Outdoors Direct Sow
April Transplant Outdoors Harvest
May Harvest
June Harvest
July โ€”
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

30โ€“50 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7b

Growing Season

229 days

Growing Tips for Crittenden County

Direct sow in early spring or fall. Harvest young leaves for milder flavor. Plants bolt quickly in heat so grow as a cool-season crop or provide shade.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Level Up Your Garden

Frequently Asked Questions

When should I plant Mustard Greens in Crittenden County, AR?

Crittenden County is in Zone 7b with an average last frost of March 21. Plan your Mustard Greens planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Crittenden County, AR?

Crittenden County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is March 21 and first fall frost is November 5.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Crittenden 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 Crittenden County, AR. Local conditions may vary. Last updated: April 2026.