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When to plant Celtuce in Tazewell County, IL

Tazewell County sits in USDA Zone 6a. Plant Celtuce between April 5 (after last frost on April 19) and April 26. A second sowing from August 6 to August 20 extends the harvest into fall.

When to Plant Celtuce in Tazewell County, IL

Tazewell County, Illinois Zone 6a June

What to do in June

Each item below is timed to Tazewell County, Illinois's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 19
Avg. first frost October 15
Soil temp (4") 70°F
Watering Low
Pest pressure High
Daylight 14.9 hrs
  1. Harvest celtuce as they ripen

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Coming up in July — start thinking about
  • First harvests: celtuce

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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.

Tazewell County, Illinois is in USDA Zone 6a. The average last spring frost is April 19 and the first fall frost is October 15, giving you a growing season of approximately 179 days.

At an elevation of 1,006 feet, Tazewell County receives approximately 40 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Celtuce during the growing season.

Tazewell County, IL (Zone 6a) Moderate season
179 days
Last Spring Frost April 19
179 growing days
First Fall Frost October 15

Tazewell County Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-6.9

Drainage

Well Drained

Celtuce Planting Risk Windows

Early Start (70% safe) ✓ Fits season (73 days to spare)
Start indoors: Mar 10 Transplant: Apr 14 🍅 Harvest: Jun 16 – Jul 28
Recommended (50%) ✓ Fits season (74 days to spare)
Start indoors: Mar 15 Transplant: Apr 19 🍅 Harvest: Jun 21 – Aug 2
Safe Start (90%) ✓ Fits season (73 days to spare)
Start indoors: Mar 29 Transplant: May 3 🍅 Harvest: Jul 5 – Aug 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.

Soil Compatibility in Tazewell County

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

Soil pH

Your soil pH (6.3–6.9) is within Celtuce's preferred range (6.0–7.0).

Soil Texture

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

Organic Matter

Organic matter is excellent (4.0%) — Celtuce will thrive.

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 179-day season

Sow every 6.9 weeks. Last sowing by Jul 17 to harvest before frost.

For a dedicated fall crop, sow by Aug 06.

Celtuce Water Budget

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

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 1.9" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 3" 3.9" 0" ✅ Rainfall sufficient
May 3" 5.2" 0" ✅ Rainfall sufficient
Jun 3" 5.1" 0" ✅ Rainfall sufficient
Jul 3" 3.9" 0" ✅ Rainfall sufficient
Aug 3" 4.7" 0" ✅ Rainfall sufficient
Sep 3" 3.3" 0" ✅ Rainfall sufficient
Oct 3" 3.1" 0" ✅ Rainfall sufficient
Nov 2.6" 0" ❄️ Dormant
Dec 1.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Tazewell 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 ~1,144 GDD — county provides 2,729 GDD Excellent fit

Celtuce Planting Timeline — Tazewell County, IL

Celtuce Planting Calendar

Activity When Date Range
Start Indoors March 15 Mar 15 – Mar 29
Transplant Outdoors April 19 Apr 19 – May 3
Direct Sow April 5 Apr 5 – Apr 26
Harvest June 21 Jun 21 – Aug 2
Fall Sowing August 6 Aug 6 – Aug 20

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

Month-by-Month Timeline

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

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: ideal

🗺️ USDA Zone

Zone 6a

📆 Growing Season

179 days in Tazewell County

Growing Tips for Celtuce in Tazewell County

Direct sow Celtuce outdoors after April 19 in Tazewell 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 Tazewell County, IL?

Tazewell County is in Zone 6a with an average last frost of April 19. Plan your Celtuce planting based on this frost date — see the calendar above for exact timing.

What planting zone is Tazewell County, IL?

Tazewell County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 19 and first fall frost is October 15.

When should I plant Celtuce in Tazewell County, IL?

In Tazewell County, IL, plant Celtuce after the last frost (around April 19) and before the first frost (around October 15). Best results when soil holds above 50°F.

What growing zone is Tazewell County, IL for Celtuce?

Tazewell County sits in USDA Zone 6a. Celtuce grows reliably in zones 3a through 10b, so it's a good fit here.

Can Celtuce grow in Tazewell County's climate?

Yes — Celtuce grows well in Tazewell County's temperate climate. Tazewell County averages a 179-day frost-free season, with last frost around April 19 and first frost around October 15.

🌱

Your Tazewell County Garden Planner — Free

A 22-page printable planner built for Tazewell County (Zone 6a). 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 Tazewell County, IL. Local conditions may vary. Last updated: June 2026.

Sources & credits

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