When to Plant Onion in Avoyelles Parish, LA
Your May planting checklist for Avoyelles Parish, Louisiana
Each item below is timed to Avoyelles Parish, Louisiana's frost dates and soil temperatures. Skip nothing, stress about nothing.
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It's harvest week for onion
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
June prep starts now
- First harvests: onion
Onions are a fundamental kitchen staple available in yellow, white, and red varieties. Choose long-day, short-day, or intermediate types based on your latitude.
Avoyelles Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 25 and the first fall frost is November 26, giving you a growing season of approximately 274 days.
At an elevation of 231 feet, Avoyelles Parish receives approximately 48.2 inches of rainfall annually with predominantly loam soil. Summer highs average 93°F, providing good warmth for Onion during the growing season.
Avoyelles Parish Soil Profile
Soil Type
Loam
Soil pH
6.3-6.7
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 Avoyelles Parish
How your county's soil matches Onion's growing requirements.
Soil pH
Your soil pH (6.3–6.7) is within Onion's preferred range (6.0–7.0).
Soil Texture
The loam soil in Avoyelles Parish is excellent for Onion — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.9%). Annual compost additions will help Onion.
How to Plant Onion
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Plant Water Budget
Monthly Watering Guide for Onion
Onion needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Onion Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.3" | 0" | ❄️ Dormant |
| Feb | 4.3" | 4" | 0.3" | 💧 Light watering |
| Mar | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| May | 4.3" | 4" | 0.3" | 💧 Light watering |
| Jun | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.2" | 0.1" | 💧 Light watering |
| Aug | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Oct | 4.3" | 2.9" | 1.4" | 💧 Light watering |
| Nov | 4.3" | 3.2" | 1.1" | 💧 Light watering |
| Dec | — | 3.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Feb–Nov in Avoyelles Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Onion 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.
Onion Planting Timeline — Avoyelles Parish, LA
Onion Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 28 | Jan 28 – Feb 11 |
| Transplant Outdoors | February 25 | Feb 25 – Mar 11 |
| Direct Sow | February 4 | Feb 4 – Feb 25 |
| Harvest | May 27 | May 27 – Jul 15 |
| Fall Sowing | October 1 | Oct 1 – Oct 15 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
90–120 days
🧪 Soil pH
Needs 6–7 · Your soil: ideal
🗺️ USDA Zone
Zone 9a
📆 Growing Season
274 days in Avoyelles Parish
Growing Tips for Onion in Avoyelles Parish
Direct sow Onion outdoors after February 25 in Avoyelles Parish when soil has warmed and frost danger has passed.
Common pests for Onion in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.
General growing tips
Start seeds indoors 8-10 weeks before transplanting. Match day-length type to your latitude. Stop watering when tops begin to fall over and cure bulbs for 2-3 weeks before storage.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Onion in Other Locations
Frequently Asked Questions
When should I plant Onion in Avoyelles Parish, LA?
Avoyelles Parish is in Zone 9a with an average last frost of February 25. Plan your Onion planting based on this frost date — see the calendar above for exact timing.
What planting zone is Avoyelles Parish, LA?
Avoyelles Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 25 and first fall frost is November 26.
Your Avoyelles Parish Garden Planner — Free
A 24-page printable planner built for Avoyelles 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.