Blog

When to Plant Celtuce in Clay County, TN

Clay County, Tennessee Zone 7a May

May in the garden — Clay County, Tennessee

Your Clay County, Tennessee garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost April 12
Avg. first frost October 27
Soil temp (4") 60°F
Watering Moderate
Pest pressure Low
Daylight 13.9 hrs
  1. Get celtuce seeds going inside

    These need a head start before your last frost (April 12). Sow into cells now so you're ready to transplant in a few weeks.

June prep starts now
  • First harvests: celtuce

Instant PDF download. No spam, unsubscribe any time.

Celtuce (stem lettuce) is a Chinese vegetable grown for its thick, crunchy stem rather than its leaves. The peeled stem has a mild, cucumber-like flavor.

Clay County, Tennessee is in USDA Zone 7a. The average last spring frost is April 12 and the first fall frost is October 27, giving you a growing season of approximately 198 days.

At an elevation of 1,418 feet, Clay County receives approximately 42.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Celtuce during the growing season.

Clay County, TN (Zone 7a) Moderate season
198 days
Last Spring Frost April 12
198 growing days
First Fall Frost October 27
Share this guide:

Clay County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (92 days to spare)
Start indoors: Mar 3 Transplant: Apr 7 🍅 Harvest: Jun 9 – Jul 21
Recommended (50%) ✓ Fits season (93 days to spare)
Start indoors: Mar 8 Transplant: Apr 12 🍅 Harvest: Jun 14 – Jul 26
Safe Start (90%) ✓ Fits season (95 days to spare)
Start indoors: Mar 21 Transplant: Apr 25 🍅 Harvest: Jun 27 – Aug 8

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 Celtuce's growing requirements.

Soil pH

Your soil pH (5.7–7.1) overlaps with Celtuce's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Celtuce.

Organic Matter

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

How to Plant Celtuce

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Succession Planting Celtuce

3
successive plantings in your 198-day season

Sow every 6.9 weeks. Last sowing by Jul 29 to harvest before frost.

For a dedicated fall crop, sow by Aug 18.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Celtuce

Celtuce needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Celtuce Needs Rainfall You Supplement Action
Jan 3.9" 0" ❄️ Dormant
Feb 3.5" 0" ❄️ Dormant
Mar 4" 0" ❄️ Dormant
Apr 3" 3.6" 0" ✅ Rainfall sufficient
May 3" 3" 0" ✅ Rainfall sufficient
Jun 3" 3.6" 0" ✅ Rainfall sufficient
Jul 3" 4.4" 0" ✅ Rainfall sufficient
Aug 3" 4.3" 0" ✅ Rainfall sufficient
Sep 3" 3" 0" ✅ Rainfall sufficient
Oct 3" 2.4" 0.6" 💧 Light watering
Nov 3.3" 0" ❄️ Dormant
Dec 3.5" 0" ❄️ Dormant

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

Celtuce 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.

Celtuce needs ~1,088 GDD — county provides 2,871 GDD Excellent fit

Celtuce Planting Timeline — Clay County, TN

Celtuce Planting Calendar

Activity When Date Range
Start Indoors March 8 Mar 8 – Mar 22
Transplant Outdoors April 12 Apr 12 – Apr 26
Direct Sow March 29 Mar 29 – Apr 19
Harvest June 14 Jun 14 – Jul 26
Fall Sowing August 18 Aug 18 – Sep 1

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors Direct Sow
April Transplant Outdoors Direct Sow
May
June Harvest
July Harvest
August Fall Sowing
September Fall Sowing
October
November
December
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

198 days in Clay County

Growing Tips for Celtuce in Clay County

Direct sow Celtuce outdoors after April 12 in Clay County when soil has warmed and frost danger has passed.

Common pests for Celtuce in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in spring or start indoors. Space 12 inches apart. Harvest when stems are about 1 inch in diameter. Peel the tough outer skin to reveal the tender center.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celtuce in Clay County, TN?

Clay County is in Zone 7a with an average last frost of April 12. Plan your Celtuce planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clay County, TN?

Clay County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is April 12 and first fall frost is October 27.

🌱

Your Clay County Garden Planner — Free

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

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Clay County, TN. 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.