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When to Plant Cress in Clay County, AR

Clay County, Arkansas Zone 7b May

Your May planting checklist for Clay County, Arkansas

May is a pivotal month for Clay County, Arkansas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 27
Avg. first frost November 2
Soil temp (4") 67°F
Watering Low
Pest pressure Moderate
Daylight 13.9 hrs
  1. Start cress indoors

    Starting these indoors now means sturdy transplants ready the moment your soil warms up.

  2. Pick cress

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

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Garden cress is one of the fastest-growing edibles, producing peppery sprouts in as little as two weeks. It is excellent for microgreens and garnishes.

Clay County, Arkansas is in USDA Zone 7b. The average last spring frost is March 27 and the first fall frost is November 2, giving you a growing season of approximately 220 days.

At an elevation of 1,448 feet, Clay County receives approximately 54.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Cress during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cress root diseases.

Clay County, AR (Zone 7b) Long season
220 days
Last Spring Frost March 27
220 growing days
First Fall Frost November 2
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Clay County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (188 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: Apr 2 – Apr 23
Recommended (50%) ✓ Fits season (185 days to spare)
Start indoors: Feb 20 Transplant: Mar 27 🍅 Harvest: Apr 10 – May 1
Safe Start (90%) ✓ Fits season (185 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Apr 30 – May 21

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.

Soil Compatibility in Clay County

How your county's soil matches Cress's growing requirements.

Soil pH

Your soil pH (5.3–6.7) overlaps with Cress's range (6.0–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Clay County is excellent for Cress — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Cress.

How to Plant Cress

0.5"
Planting Depth
2"
Between Plants
6"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Cress

19
successive plantings in your 220-day season

Sow every 1.6 weeks. Last sowing by Oct 12 to harvest before frost.

For a dedicated fall crop, sow by Aug 24.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Cress

Cress needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Cress Needs Rainfall You Supplement Action
Jan 4.2" 0" ❄️ Dormant
Feb 4.9" 0" ❄️ Dormant
Mar 4.3" 5.7" 0" ✅ Rainfall sufficient
Apr 4.3" 4.4" 0" ✅ Rainfall sufficient
May 4.3" 4.6" 0" ✅ Rainfall sufficient
Jun 4.3" 5.5" 0" ✅ Rainfall sufficient
Jul 4.3" 5" 0" ✅ Rainfall sufficient
Aug 4.3" 5.3" 0" ✅ Rainfall sufficient
Sep 4.3" 3.6" 0.7" 💧 Light watering
Oct 4.3" 3.5" 0.8" 💧 Light watering
Nov 4.3" 3.9" 0.4" 💧 Light watering
Dec 4.2" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Clay County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Cress Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Cress needs ~306 GDD — county provides 3,850 GDD Excellent fit

Cress Planting Timeline — Clay County, AR

Cress Planting Calendar

Activity When Date Range
Start Indoors February 20 Feb 20 – Mar 6
Transplant Outdoors March 27 Mar 27 – Apr 10
Direct Sow March 13 Mar 13 – Apr 3
Harvest April 10 Apr 10 – May 1
Fall Sowing August 24 Aug 24 – Sep 7

Plant 0.5" deep · 2" apart · Rows 6" apart

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

14–21 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

220 days in Clay County

Growing Tips for Cress in Clay County

Direct sow Cress outdoors after March 27 in Clay County when soil has warmed and frost danger has passed.

Your generous 220.0-day season in Clay County allows multiple plantings of Cress. Sow every 7.0 days for continuous harvest.

Common pests for Cress in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Sow seeds thickly on moist soil or paper towels. Keep moist and harvest when 2-3 inches tall. Succession sow every few days for continuous supply. Grows well indoors year-round.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cress in Clay County, AR?

Clay County is in Zone 7b with an average last frost of March 27. Plan your Cress planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clay County, AR?

Clay County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is March 27 and first fall frost is November 2.

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Your Clay County Garden Planner — Free

A 24-page printable planner built for Clay County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Clay County, AR. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.