When to plant Cauliflower in Cobb County, GA
Aim to plant Cauliflower in Cobb County on or after March 17; the window stays open through April 7. Cobb County's 215-day frost-free season gives you enough for a full main crop and a short fall succession. A second sowing from August 23 to September 6 extends the harvest into fall.
When to Plant Cauliflower in Cobb County, GA
Your June game plan for Cobb County, Georgia
We've pulled the most time-sensitive tasks for Cobb County, Georgia this June and put them front and centre. Tackle them in order.
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Collect cauliflower at their peak
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
July prep starts now
- First harvests: cauliflower
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.
Cobb County, Georgia is in USDA Zone 8a. The average last spring frost is March 31 and the first fall frost is November 1, giving you a growing season of approximately 215 days.
At an elevation of 387 feet, Cobb County receives approximately 57.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 89°F, 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.
Cobb County Soil Profile
Soil Type
Clay Loam
Soil pH
5.3-6.5
Drainage
Well Drained
Cauliflower Planting Risk Windows
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 Cobb County
How your county's soil matches Cauliflower's growing requirements.
Soil pH
Your soil pH (5.3–6.5) is more acidic than Cauliflower prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
The clay loam soil in Cobb County is excellent for Cauliflower — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Cauliflower.
Organic Matter
Organic matter is moderate (2.3%). Annual compost additions will help Cauliflower.
How to Plant Cauliflower
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Cauliflower
Sow every 6.3 weeks. Last sowing by Jul 24 to harvest before frost.
For a dedicated fall crop, sow by Aug 23.
Cauliflower Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Cauliflower
Cauliflower needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Cauliflower Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.2" | 0" | ❄️ Dormant |
| Feb | — | 4" | 0" | ❄️ Dormant |
| Mar | 4.3" | 6" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Jun | 4.3" | 5.8" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.5" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.7" | 0.6" | 💧 Light watering |
| Nov | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| Dec | — | 5.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Cobb County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Cauliflower 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.
Cauliflower Planting Timeline — Cobb County, GA
Cauliflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 24 | Feb 24 – Mar 10 |
| Transplant Outdoors | March 31 | Mar 31 – Apr 14 |
| Direct Sow | March 17 | Mar 17 – Apr 7 |
| Harvest | May 26 | May 26 – Jul 28 |
| Fall Sowing | August 23 | Aug 23 – Sep 6 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Natural rainfall sufficient
📅 Days to Maturity
55–100 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 8a
📆 Growing Season
215 days in Cobb County
Growing Tips for Cauliflower in Cobb County
Direct sow Cauliflower outdoors after March 31 in Cobb County when soil has warmed and frost danger has passed.
With Cobb 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.
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
Check more plant combinations with our Companion Planting Checker →
Cauliflower in Other Locations
Frequently Asked Questions
When should I plant Cauliflower in Cobb County, GA?
Cobb County is in Zone 8a with an average last frost of March 31. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.
What planting zone is Cobb County, GA?
Cobb County, Georgia is in USDA Hardiness Zone 8a. The average last spring frost is March 31 and first fall frost is November 1.
When should I plant Cauliflower in Cobb County, GA?
In Cobb County, GA, plant Cauliflower after the last frost (around March 31) and before the first frost (around November 1). Best results when soil holds above 50°F.
What growing zone is Cobb County, GA for Cauliflower?
Cobb County sits in USDA Zone 8a. Cauliflower grows reliably in zones 2a through 10b, so it's a good fit here.
Can Cauliflower grow in Cobb County's climate?
Yes — Cauliflower grows well in Cobb County's temperate climate. Cobb County averages a 215-day frost-free season, with last frost around March 31 and first frost around November 1.
Your Cobb County Garden Planner — Free
A 22-page printable planner built for Cobb County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.