When to Plant Cauliflower in Grant Parish, LA
Your May game plan for Grant Parish, Louisiana
We've pulled the most time-sensitive tasks for Grant Parish, Louisiana this May and put them front and centre. Tackle them in order.
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It's harvest week for cauliflower
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
Get ahead of June
- 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.
Grant Parish, Louisiana is in USDA Zone 9a. The average last spring frost is March 3 and the first fall frost is November 19, giving you a growing season of approximately 261 days.
At an elevation of 356 feet, Grant Parish receives approximately 56.8 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Cauliflower during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cauliflower root diseases.
Grant Parish Soil Profile
Soil Type
Loam
Soil pH
6.1-7.3
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 Grant Parish
How your county's soil matches Cauliflower's growing requirements.
Soil pH
Your soil pH (6.1–7.3) overlaps with Cauliflower's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in Grant Parish is excellent for Cauliflower — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.8%). Annual compost additions will help Cauliflower.
How to Plant Cauliflower
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Cauliflower
Sow every 6.3 weeks. Last sowing by Aug 11 to harvest before frost.
For a dedicated fall crop, sow by Sep 24.
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 | — | 5" | 0" | ❄️ Dormant |
| Feb | — | 4.2" | 0" | ❄️ Dormant |
| Mar | 4.3" | 6" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 6" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| Nov | 4.3" | 4.2" | 0.1" | 💧 Light watering |
| Dec | — | 4.4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Grant Parish). 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 — Grant Parish, LA
Cauliflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 3 | Feb 3 – Feb 17 |
| Transplant Outdoors | March 3 | Mar 3 – Mar 17 |
| Direct Sow | February 10 | Feb 10 – Mar 3 |
| Harvest | April 28 | Apr 28 – Jun 30 |
| Fall Sowing | September 24 | Sep 24 – Oct 8 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| 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: acceptable
🗺️ USDA Zone
Zone 9a
📆 Growing Season
261 days in Grant Parish
Growing Tips for Cauliflower in Grant Parish
Direct sow Cauliflower outdoors after March 03 in Grant Parish when soil has warmed and frost danger has passed.
Summer highs in Grant Parish 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 Grant Parish, LA?
Grant Parish is in Zone 9a with an average last frost of March 3. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.
What planting zone is Grant Parish, LA?
Grant Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is March 3 and first fall frost is November 19.
Your Grant Parish Garden Planner — Free
A 24-page printable planner built for Grant Parish (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.