When to Plant Cauliflower in Calhoun County, SC
May in Calhoun County, South Carolina — your action list
Each item below is timed to Calhoun County, South Carolina's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Pick cauliflower
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
June 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.
Calhoun County, South Carolina is in USDA Zone 8b. The average last spring frost is March 17 and the first fall frost is November 17, giving you a growing season of approximately 245 days.
At an elevation of 447 feet, Calhoun County receives approximately 51.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 92°F, providing good warmth for Cauliflower during the growing season. Sandy soil warms quickly in spring — great for early planting — but Cauliflower will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cauliflower root diseases.
Calhoun County Soil Profile
Soil Type
Sandy Loam
Soil pH
5-6.3
Drainage
Well Drained
Plant 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 Calhoun County
How your county's soil matches Cauliflower's growing requirements.
Soil pH
Your soil pH (5.0–6.3) is more acidic than Cauliflower prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Calhoun County warms quickly in spring but drains fast. Cauliflower will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.9%). Add 2-3 inches of compost before planting 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 Aug 09 to harvest before frost.
For a dedicated fall crop, sow by Sep 08.
Plant Water Budget
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 | — | 4.1" | 0" | ❄️ Dormant |
| Feb | — | 4" | 0" | ❄️ Dormant |
| Mar | 4.3" | 5.3" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 3.2" | 1.1" | 💧 Light watering |
| May | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.7" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Oct | 4.3" | 3" | 1.3" | 💧 Light watering |
| Nov | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Dec | — | 3.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Calhoun 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 — Calhoun County, SC
Cauliflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 10 | Feb 10 – Feb 24 |
| Transplant Outdoors | March 17 | Mar 17 – Mar 31 |
| Direct Sow | March 3 | Mar 3 – Mar 24 |
| Harvest | May 12 | May 12 – Jul 14 |
| Fall Sowing | September 8 | Sep 8 – Sep 22 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
55–100 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 8b
📆 Growing Season
245 days in Calhoun County
Growing Tips for Cauliflower in Calhoun County
Direct sow Cauliflower outdoors after March 17 in Calhoun County when soil has warmed and frost danger has passed.
Sandy soil in Calhoun County dries quickly — mulch Cauliflower with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Summer highs in Calhoun County reach 92°F — 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
Check more plant combinations with our Companion Planting Checker →
Cauliflower in Other Locations
Frequently Asked Questions
When should I plant Cauliflower in Calhoun County, SC?
Calhoun County is in Zone 8b with an average last frost of March 17. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.
What planting zone is Calhoun County, SC?
Calhoun County, South Carolina is in USDA Hardiness Zone 8b. The average last spring frost is March 17 and first fall frost is November 17.
Your Calhoun County Garden Planner — Free
A 24-page printable planner built for Calhoun County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.