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When to Plant Collard Greens in Bay County, FL

Bay County, Florida Zone 9b May

What to do in May

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

Avg. last frost March 5
Avg. first frost November 20
Soil temp (4") 73°F
Watering Moderate
Pest pressure High
Daylight 13.5 hrs
  1. Start harvesting collard greens

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

Before June arrives, get these ready
  • First harvests: collard greens

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Collard greens are a heat-tolerant member of the cabbage family with large, sturdy leaves. They are a Southern staple and one of the most nutritious leafy greens.

Bay County, Florida is in USDA Zone 9b. The average last spring frost is March 5 and the first fall frost is November 20, giving you a growing season of approximately 260 days.

At an elevation of 388 feet, Bay County receives approximately 50.1 inches of rainfall annually with predominantly sand soil. Summer highs average 90°F, providing good warmth for Collard Greens during the growing season. Sandy soil warms quickly in spring — great for early planting — but Collard Greens will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Collard Greens root diseases.

Bay County, FL (Zone 9b) Long season
260 days
Last Spring Frost March 5
260 growing days
First Fall Frost November 20

Bay County Soil Profile

Soil Type

Sand

Soil pH

5.2-6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (143 days to spare)
Start indoors: Jan 26 Transplant: Feb 23 🍅 Harvest: Apr 20 – Jun 22
Recommended (50%) ✓ Fits season (141 days to spare)
Start indoors: Feb 5 Transplant: Mar 5 🍅 Harvest: Apr 30 – Jul 2
Safe Start (90%) ✓ Fits season (141 days to spare)
Start indoors: Feb 27 Transplant: Mar 27 🍅 Harvest: May 22 – Jul 24

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 Bay County

How your county's soil matches Collard Greens's growing requirements.

Soil pH

Your soil pH (5.2–6.0) is more acidic than Collard Greens prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Collard Greens.

Organic Matter

Organic matter is low (1.4%). Add 2-3 inches of compost before planting Collard Greens.

How to Plant Collard Greens

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 Collard Greens

5
successive plantings in your 260-day season

Sow every 6.3 weeks. Last sowing by Sep 06 to harvest before frost.

For a dedicated fall crop, sow by Sep 25.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
0.8″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 641 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Collard Greens

Collard Greens needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Collard Greens Needs Rainfall You Supplement Action
Jan 2.7" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 3.5" 2.6" 0.9" 💧 Light watering
Apr 3.5" 2.3" 1.2" 💧 Light watering
May 3.5" 3.2" 0.3" 💧 Light watering
Jun 3.5" 6.7" 0" ✅ Rainfall sufficient
Jul 3.5" 7.3" 0" ✅ Rainfall sufficient
Aug 3.5" 6.8" 0" ✅ Rainfall sufficient
Sep 3.5" 6.6" 0" ✅ Rainfall sufficient
Oct 3.5" 4.7" 0" ✅ Rainfall sufficient
Nov 3.5" 2.2" 1.3" 💧 Light watering
Dec 2.3" 0" ❄️ Dormant

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

Collard Greens 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.

Collard Greens needs ~1,138 GDD — county provides 4,550 GDD Excellent fit

Collard Greens Planting Timeline — Bay County, FL

Collard Greens Planting Calendar

Activity When Date Range
Start Indoors February 5 Feb 5 – Feb 19
Transplant Outdoors March 5 Mar 5 – Mar 19
Direct Sow February 12 Feb 12 – Mar 5
Harvest April 30 Apr 30 – Jul 2
Fall Sowing September 25 Sep 25 – Oct 9

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Only during dry spells

📅 Days to Maturity

55–75 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

260 days in Bay County

Growing Tips for Collard Greens in Bay County

Direct sow Collard Greens outdoors after March 05 in Bay County when soil has warmed and frost danger has passed.

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

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

General growing tips

Start seeds indoors or direct sow 4-6 weeks before last frost. Harvest lower leaves first, leaving the growing tip intact. Flavor improves after exposure to frost.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Collard Greens in Bay County, FL?

Bay County is in Zone 9b with an average last frost of March 5. Plan your Collard Greens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bay County, FL?

Bay County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is March 5 and first fall frost is November 20.

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Your Bay County Garden Planner — Free

A 24-page printable planner built for Bay County (Zone 9b). 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 Bay 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.