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When to Plant Napa Cabbage in Glades County, FL

Glades County, Florida Zone 10a May

May in Glades County, Florida — your action list

Your garden in Glades County, Florida is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost February 1
Avg. first frost December 19
Soil temp (4") 77°F
Watering Moderate
Pest pressure High
Daylight 13.3 hrs
  1. Collect napa cabbage at their peak

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

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Napa cabbage forms tall, barrel-shaped heads with tender, crinkled leaves and a mild, slightly sweet flavor. It is the primary cabbage used for kimchi.

Glades County, Florida is in USDA Zone 10a. The average last spring frost is February 1 and the first fall frost is December 19, giving you a growing season of approximately 321 days.

At an elevation of 434 feet, Glades County receives approximately 54.3 inches of rainfall annually with predominantly sand soil. Summer highs average 101°F, so Napa Cabbage may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Napa Cabbage will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Napa Cabbage root diseases.

Glades County, FL (Zone 10a) Year-round
321 days
Last Spring Frost February 1
321 growing days
First Fall Frost December 19

Glades County Soil Profile

Soil Type

Sand

Soil pH

5.1-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (228 days to spare)
Start indoors: Dec 25 Transplant: Jan 22 🍅 Harvest: Mar 19 – Apr 23
Recommended (50%) ✓ Fits season (230 days to spare)
Start indoors: Jan 4 Transplant: Feb 1 🍅 Harvest: Mar 29 – May 3
Safe Start (90%) ✓ Fits season (207 days to spare)
Start indoors: Feb 1 Transplant: Mar 1 🍅 Harvest: Apr 26 – May 31

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 Glades County

How your county's soil matches Napa Cabbage's growing requirements.

Soil pH

Your soil pH (5.1–6.3) is more acidic than Napa Cabbage prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Napa Cabbage is a heavy drinker but your soil drains very quickly. Mulch heavily and consider drip irrigation.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting Napa Cabbage.

How to Plant Napa Cabbage

1"
Planting Depth
15"
Between Plants
24"
Between Rows

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

Succession Planting Napa Cabbage

7
successive plantings in your 321-day season

Sow every 6.3 weeks. Last sowing by Oct 05 to harvest before frost.

For a dedicated fall crop, sow by Oct 24.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.7″/week
You supply
1.2″/week
Watering frequency 2-3 times/week
Season total 3,559 gal / 100 sq ft

Monthly Watering Guide for Napa Cabbage

Napa Cabbage needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Napa Cabbage Needs Rainfall You Supplement Action
Jan 2.7" 0" ❄️ Dormant
Feb 6.5" 2.5" 4" 🚿 Regular watering
Mar 6.5" 2.9" 3.6" 🚿 Regular watering
Apr 6.5" 2.7" 3.8" 🚿 Regular watering
May 6.5" 3.5" 3" 💧 Light watering
Jun 6.5" 8" 0" ✅ Rainfall sufficient
Jul 6.5" 8.3" 0" ✅ Rainfall sufficient
Aug 6.5" 7.7" 0" ✅ Rainfall sufficient
Sep 6.5" 7.2" 0" ✅ Rainfall sufficient
Oct 6.5" 4.2" 2.3" 💧 Light watering
Nov 6.5" 2.3" 4.2" 🚿 Regular watering
Dec 6.5" 2.3" 4.2" 🚿 Regular watering

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

Napa Cabbage 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.

Napa Cabbage needs ~1,674 GDD — county provides 8,291 GDD Excellent fit

Napa Cabbage Planting Timeline — Glades County, FL

Napa Cabbage Planting Calendar

Activity When Date Range
Start Indoors January 4 Jan 4 – Jan 18
Transplant Outdoors February 1 Feb 1 – Feb 15
Direct Sow January 11 Jan 11 – Feb 1
Harvest March 29 Mar 29 – May 3
Fall Sowing October 24 Oct 24 – Nov 7

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · 2-3 times/week

📅 Days to Maturity

55–75 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 10a

📆 Growing Season

321 days in Glades County

Growing Tips for Napa Cabbage in Glades County

Direct sow Napa Cabbage outdoors after February 01 in Glades County when soil has warmed and frost danger has passed.

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

With summer highs reaching 101°F in Glades County, provide afternoon shade for Napa Cabbage and water deeply in the morning.

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

General growing tips

Best grown as a fall crop. Direct sow in late summer, 60-70 days before first frost. Keep soil evenly moist. Bolt-resistant varieties are available for spring planting.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Napa Cabbage in Glades County, FL?

Glades County is in Zone 10a with an average last frost of February 1. Plan your Napa Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Glades County, FL?

Glades County, Florida is in USDA Hardiness Zone 10a. The average last spring frost is February 1 and first fall frost is December 19.

🌱

Your Glades County Garden Planner — Free

A 24-page printable planner built for Glades 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 Glades 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.