When to Plant Rutabaga in St. Helena Parish, LA
This month in St. Helena Parish, Louisiana
Your garden in St. Helena Parish, Louisiana is working on a schedule, even when you're not. Here's where you should be this May.
-
Bring in the rutabaga
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
Get ahead of June
- First harvests: rutabaga
Rutabagas are a cross between turnips and cabbage, producing large yellow-fleshed roots with a sweet, mild flavor. They are excellent mashed, roasted, or in stews.
St. Helena Parish, Louisiana is in USDA Zone 9a. The average last spring frost is March 5 and the first fall frost is November 30, giving you a growing season of approximately 270 days.
At an elevation of 437 feet, St. Helena Parish receives approximately 50 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Rutabaga may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Rutabaga will need more frequent watering and organic matter to retain nutrients.
St. Helena Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
4.8-6.5
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 St. Helena Parish
How your county's soil matches Rutabaga's growing requirements.
Soil pH
Your soil pH (4.8–6.5) is more acidic than Rutabaga prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in St. Helena Parish warms quickly in spring but drains fast. Rutabaga will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.7%). Add 2-3 inches of compost before planting Rutabaga.
How to Plant Rutabaga
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Rutabaga
Sow every 9.1 weeks. Last sowing by Aug 22 to harvest before frost.
For a dedicated fall crop, sow by Oct 05.
Plant Water Budget
Monthly Watering Guide for Rutabaga
Rutabaga needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Rutabaga Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.8" | 0" | ❄️ Dormant |
| Feb | — | 3.7" | 0" | ❄️ Dormant |
| Mar | 3" | 5.5" | 0" | ✅ Rainfall sufficient |
| Apr | 3" | 3.3" | 0" | ✅ Rainfall sufficient |
| May | 3" | 3.6" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 5.1" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 3.6" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 3.3" | 0" | ✅ Rainfall sufficient |
| Nov | 3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Dec | — | 4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in St. Helena Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Rutabaga 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.
Rutabaga Planting Timeline — St. Helena Parish, LA
Rutabaga Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | February 12 | Feb 12 – Mar 5 |
| Harvest | May 7 | May 7 – Jun 11 |
| Fall Sowing | October 5 | Oct 5 – Oct 19 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Direct Sow |
| March | Direct Sow |
| April | — |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
80–100 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
270 days in St. Helena Parish
Growing Tips for Rutabaga in St. Helena Parish
Direct sow Rutabaga outdoors after March 05 in St. Helena Parish when soil has warmed and frost danger has passed.
Sandy soil in St. Helena Parish dries quickly — mulch Rutabaga with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 96°F in St. Helena Parish, provide afternoon shade for Rutabaga and water deeply in the morning.
Common pests for Rutabaga in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in early summer for fall harvest. Thin seedlings to 6-8 inches apart. Flavor improves significantly after a few light frosts.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Rutabaga in Other Locations
Frequently Asked Questions
When should I plant Rutabaga in St. Helena Parish, LA?
St. Helena Parish is in Zone 9a with an average last frost of March 5. Plan your Rutabaga planting based on this frost date — see the calendar above for exact timing.
What planting zone is St. Helena Parish, LA?
St. Helena Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is March 5 and first fall frost is November 30.
Your St. Helena Parish Garden Planner — Free
A 24-page printable planner built for St. Helena 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.