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When to Plant Cauliflower in Bibb County, AL

Cauliflower is a cool-season brassica that produces dense white, purple, or green heads called curds. It is more finicky than broccoli but rewards with a mild, nutty flavor.

Bibb County, Alabama is in USDA Zone 7b. The average last spring frost is March 14 and the first fall frost is November 13, giving you a growing season of approximately 244 days.

At an elevation of 66 feet, Bibb County receives approximately 59.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92ยฐF, providing good warmth for Cauliflower during the growing season. Clay soil retains moisture well for Cauliflower, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cauliflower root diseases.

Bibb County, AL (Zone 7b) Long season
244 days
Last Spring Frost March 14
244 growing days
First Fall Frost November 13

Bibb County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (125 days to spare)
Start indoors: Jan 31 Transplant: Mar 7 🍅 Harvest: May 2 – Jul 4
Recommended (50%) ✓ Fits season (125 days to spare)
Start indoors: Feb 7 Transplant: Mar 14 🍅 Harvest: May 9 – Jul 11
Safe Start (90%) ✓ Fits season (122 days to spare)
Start indoors: Feb 27 Transplant: Apr 3 🍅 Harvest: May 29 – Jul 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 Bibb County

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

Soil pH

Your soil pH (5.3โ€“6.6) is more acidic than Cauliflower prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Bibb County is excellent for Cauliflower โ€” good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Cauliflower.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Cauliflower.

How to Plant Cauliflower

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Cauliflower

5
successive plantings in your 244-day season

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

For a dedicated fall crop, sow by Sep 04.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Cauliflower needs ~1,472 GDD — county provides 4,636 GDD Excellent fit

Cauliflower Planting Timeline โ€” Bibb County, AL

Cauliflower Planting Calendar

Activity When Date Range
Start Indoors February 7 Feb 7 โ€“ Feb 21
Transplant Outdoors March 14 Mar 14 โ€“ Mar 28
Direct Sow February 28 Feb 28 โ€“ Mar 21
Fall Sowing September 4 Sep 4 โ€“ Sep 18
Harvest May 9 May 9 โ€“ Jul 11

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

55โ€“100 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

244 days in Bibb County

Growing Tips for Cauliflower in Bibb County

Direct sow Cauliflower outdoors after March 14 in Bibb County when soil has warmed and frost danger has passed.

With Bibb County's clay soil (26% clay), work in 3-4 inches of compost before planting Cauliflower. Avoid tilling when soil is wet to prevent compaction.

Summer highs in Bibb County reach 92ยฐF โ€” grow Cauliflower as a spring or fall crop. Use shade cloth if planting in summer.

Common pests for Cauliflower 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 6 weeks before transplanting. Blanch white varieties by tying outer leaves over the head. Provide consistent moisture and avoid temperature extremes.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Level Up Your Garden

Frequently Asked Questions

When should I plant Cauliflower in Bibb County, AL?

Bibb County is in Zone 7b with an average last frost of March 14. Plan your Cauliflower planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Bibb County, AL?

Bibb County, Alabama is in USDA Hardiness Zone 7b. The average last spring frost is March 14 and first fall frost is November 13.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Bibb County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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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 Bibb County, AL. Local conditions may vary. Last updated: April 2026.