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When to Plant Endive in St. Lucie County, FL

St. Lucie County, Florida Zone 10a May

St. Lucie County, Florida gardeners: here's your May plan

We've pulled the most time-sensitive tasks for St. Lucie County, Florida this May and put them front and centre. Tackle them in order.

Avg. last frost January 29
Avg. first frost December 16
Soil temp (4") 78°F
Watering Moderate
Pest pressure High
Daylight 13.4 hrs

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Endive is a leafy green with a slightly bitter flavor, available in curly (frisee) and broad-leaved (escarole) types. It adds texture and complexity to salads.

St. Lucie County, Florida is in USDA Zone 10a. The average last spring frost is January 29 and the first fall frost is December 16, giving you a growing season of approximately 321 days.

At an elevation of 185 feet, St. Lucie County receives approximately 56.2 inches of rainfall annually with predominantly sand soil. Summer highs average 89°F, providing good warmth for Endive during the growing season. Sandy soil warms quickly in spring — great for early planting — but Endive will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Endive root diseases.

St. Lucie County, FL (Zone 10a) Year-round
321 days
Last Spring Frost January 29
321 growing days
First Fall Frost December 16

St. Lucie County Soil Profile

Soil Type

Sand

Soil pH

4.8-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (240 days to spare)
Start indoors: Dec 22 Transplant: Jan 19 🍅 Harvest: Mar 9 – Apr 13
Recommended (50%) ✓ Fits season (237 days to spare)
Start indoors: Jan 1 Transplant: Jan 29 🍅 Harvest: Mar 19 – Apr 23
Safe Start (90%) ✓ Fits season (224 days to spare)
Start indoors: Jan 21 Transplant: Feb 18 🍅 Harvest: Apr 8 – May 13

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 St. Lucie County

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

Soil pH

Your soil pH (4.8–5.8) is more acidic than Endive prefers (5.5–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Endive.

Organic Matter

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

How to Plant Endive

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 Endive

8
successive plantings in your 321-day season

Sow every 5.1 weeks. Last sowing by Oct 12 to harvest before frost.

For a dedicated fall crop, sow by Oct 21.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
0.7″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 609 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Endive

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

Month Endive Needs Rainfall You Supplement Action
Jan 3" 2.3" 0.7" 💧 Light watering
Feb 3" 2.7" 0.3" 💧 Light watering
Mar 3" 3.3" 0" ✅ Rainfall sufficient
Apr 3" 2.2" 0.8" 💧 Light watering
May 3" 3.1" 0" ✅ Rainfall sufficient
Jun 3" 8.1" 0" ✅ Rainfall sufficient
Jul 3" 9" 0" ✅ Rainfall sufficient
Aug 3" 8.6" 0" ✅ Rainfall sufficient
Sep 3" 7.5" 0" ✅ Rainfall sufficient
Oct 3" 5" 0" ✅ Rainfall sufficient
Nov 3" 2.1" 0.9" 💧 Light watering
Dec 3" 2.2" 0.8" 💧 Light watering

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

Endive 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.

Endive needs ~921 GDD — county provides 5,393 GDD Excellent fit

Endive Planting Timeline — St. Lucie County, FL

Endive Planting Calendar

Activity When Date Range
Start Indoors January 1 Jan 1 – Jan 15
Transplant Outdoors January 29 Jan 29 – Feb 12
Direct Sow January 8 Jan 8 – Jan 29
Harvest March 19 Mar 19 – Apr 23
Fall Sowing October 21 Oct 21 – Nov 4

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Only during dry spells

📅 Days to Maturity

45–65 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 10a

📆 Growing Season

321 days in St. Lucie County

Growing Tips for Endive in St. Lucie County

Direct sow Endive outdoors after January 29 in St. Lucie County when soil has warmed and frost danger has passed.

Sandy soil in St. Lucie County dries quickly — mulch Endive with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Your generous 322.0-day season in St. Lucie County allows multiple plantings of Endive. Sow every 22.0 days for continuous harvest.

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

General growing tips

Sow seeds directly in spring or fall. Blanch heads by tying outer leaves together 2-3 weeks before harvest to reduce bitterness. Keep soil evenly moist.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Endive in St. Lucie County, FL?

St. Lucie County is in Zone 10a with an average last frost of January 29. Plan your Endive planting based on this frost date — see the calendar above for exact timing.

What planting zone is St. Lucie County, FL?

St. Lucie County, Florida is in USDA Hardiness Zone 10a. The average last spring frost is January 29 and first fall frost is December 16.

🌱

Your St. Lucie County Garden Planner — Free

A 24-page printable planner built for St. Lucie County (Zone 10a). 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 St. Lucie County, FL. 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.