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When to Plant Celtuce in Hardee County, FL

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.

Hardee County, Florida is in USDA Zone 9b. The average last spring frost is January 27 and the first fall frost is December 20, giving you a growing season of approximately 327 days.

At an elevation of 374 feet, Hardee County receives approximately 59.8 inches of rainfall annually with predominantly sand soil. Summer highs average 102ยฐF, so Celtuce may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Celtuce will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celtuce root diseases.

Hardee County, FL (Zone 9b) Year-round
327 days
Last Spring Frost January 27
327 growing days
First Fall Frost December 20

Hardee County Soil Profile

Soil Type

Sand

Soil pH

4.9-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (217 days to spare)
Start indoors: Dec 23 Transplant: Jan 20 🍅 Harvest: Mar 24 – May 5
Recommended (50%) ✓ Fits season (222 days to spare)
Start indoors: Dec 30 Transplant: Jan 27 🍅 Harvest: Mar 31 – May 12
Safe Start (90%) ✓ Fits season (202 days to spare)
Start indoors: Jan 24 Transplant: Feb 21 🍅 Harvest: Apr 25 – Jun 6

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 Hardee County

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

Soil pH

Your soil pH (4.9โ€“5.8) is more acidic than Celtuce prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Hardee County warms quickly in spring but drains fast. Celtuce will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Celtuce.

Organic Matter

Organic matter is low (1.3%). Add 2-3 inches of compost before planting Celtuce.

How to Plant Celtuce

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Celtuce

6
successive plantings in your 327-day season

Sow every 6.9 weeks. Last sowing by Sep 21 to harvest before frost.

For a dedicated fall crop, sow by Oct 25.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
0.8″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 421 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 3" 2.7" 0.3" ๐Ÿ’ง Light watering
Feb 3" 3.1" 0" โœ… Rainfall sufficient
Mar 3" 3.3" 0" โœ… Rainfall sufficient
Apr 3" 2.9" 0.1" ๐Ÿ’ง Light watering
May 3" 3.8" 0" โœ… Rainfall sufficient
Jun 3" 8.7" 0" โœ… Rainfall sufficient
Jul 3" 10.3" 0" โœ… Rainfall sufficient
Aug 3" 8.7" 0" โœ… Rainfall sufficient
Sep 3" 7.5" 0" โœ… Rainfall sufficient
Oct 3" 4.6" 0" โœ… Rainfall sufficient
Nov 3" 2.1" 0.9" ๐Ÿ’ง Light watering
Dec 3" 2.1" 0.9" ๐Ÿ’ง Light watering

Water needs are for active growing months only (Janโ€“Dec in Hardee County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 ~1,988 GDD — county provides 8,692 GDD Excellent fit

Celtuce Planting Timeline โ€” Hardee County, FL

Celtuce Planting Calendar

Activity When Date Range
Start Indoors December 30 Dec 30 โ€“ Jan 13
Transplant Outdoors January 27 Jan 27 โ€“ Feb 10
Direct Sow January 6 Jan 6 โ€“ Jan 27
Harvest March 31 Mar 31 โ€“ May 12
Fall Sowing October 25 Oct 25 โ€“ Nov 8

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.7"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9b

๐Ÿ“† Growing Season

327 days in Hardee County

Growing Tips for Celtuce in Hardee County

Direct sow Celtuce outdoors after January 27 in Hardee County when soil has warmed and frost danger has passed.

Sandy soil in Hardee County dries quickly โ€” mulch Celtuce with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 102ยฐF in Hardee County, provide afternoon shade for Celtuce and water deeply in the morning.

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 Hardee County, FL?

Hardee County is in Zone 9b with an average last frost of January 27. Plan your Celtuce planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hardee County, FL?

Hardee County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 27 and first fall frost is December 20.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Hardee County gardeners in Zone 9b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

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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 Hardee County, FL. Local conditions may vary. Last updated: April 2026.