When to Plant Tomatillo in St. Bernard Parish, LA
May to-do list for St. Bernard Parish, Louisiana
May is a pivotal month for St. Bernard Parish, Louisiana gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Start harvesting tomatillo
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
Before June arrives, get these ready
- First harvests: tomatillo
Tomatillos are a Mexican staple that produces tart, green fruits enclosed in papery husks. They are essential for salsa verde and green sauces.
St. Bernard Parish, Louisiana is in USDA Zone 9b. The average last spring frost is February 2 and the first fall frost is December 11, giving you a growing season of approximately 312 days.
At an elevation of 455 feet, St. Bernard Parish receives approximately 51.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 104°F, so Tomatillo may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Tomatillo will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tomatillo root diseases.
St. Bernard Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
5.2-6.5
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. Bernard Parish
How your county's soil matches Tomatillo's growing requirements.
Soil pH
Your soil pH (5.2–6.5) is more acidic than Tomatillo prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in St. Bernard Parish warms quickly in spring but drains fast. Tomatillo will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Tomatillo.
Organic Matter
Organic matter is moderate (2.0%). Annual compost additions will help Tomatillo.
How to Plant Tomatillo
Succession Planting Tomatillo
Sow every 6.9 weeks. Last sowing by Sep 17 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Tomatillo
Tomatillo needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.
| Month | Tomatillo Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.6" | 0" | ❄️ Dormant |
| Feb | 4.8" | 4.4" | 0.4" | 💧 Light watering |
| Mar | 4.8" | 5.3" | 0" | ✅ Rainfall sufficient |
| Apr | 4.8" | 4" | 0.8" | 💧 Light watering |
| May | 4.8" | 4.4" | 0.4" | 💧 Light watering |
| Jun | 4.8" | 4.8" | 0" | ✅ Rainfall sufficient |
| Jul | 4.8" | 5.9" | 0" | ✅ Rainfall sufficient |
| Aug | 4.8" | 4.2" | 0.6" | 💧 Light watering |
| Sep | 4.8" | 3.6" | 1.2" | 💧 Light watering |
| Oct | 4.8" | 3.1" | 1.7" | 💧 Light watering |
| Nov | 4.8" | 3.9" | 0.9" | 💧 Light watering |
| Dec | 4.8" | 3.5" | 1.3" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in St. Bernard Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Tomatillo 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.
Tomatillo Planting Timeline — St. Bernard Parish, LA
Tomatillo Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 22 | Dec 22 – Jan 5 |
| Transplant Outdoors | February 9 | Feb 9 – Feb 23 |
| Direct Sow | February 2 | Feb 2 – Feb 23 |
| Harvest | April 13 | Apr 13 – Jun 22 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Transplant Outdoors Direct Sow |
| March | — |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | Start Indoors |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.1"/week · Only during dry spells
📅 Days to Maturity
60–85 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9b
📆 Growing Season
312 days in St. Bernard Parish
Growing Tips for Tomatillo in St. Bernard Parish
Direct sow Tomatillo outdoors after February 02 in St. Bernard Parish when soil has warmed and frost danger has passed.
Sandy soil in St. Bernard Parish dries quickly — mulch Tomatillo with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 104°F in St. Bernard Parish, provide afternoon shade for Tomatillo and water deeply in the morning.
Common pests for Tomatillo in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.
General growing tips
Start seeds indoors 6-8 weeks before last frost. Plant at least two plants for cross-pollination. Harvest when fruits fill the husk and it begins to split.
Companion Planting
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Tomatillo in Other Locations
Frequently Asked Questions
When should I plant Tomatillo in St. Bernard Parish, LA?
St. Bernard Parish is in Zone 9b with an average last frost of February 2. Plan your Tomatillo planting based on this frost date — see the calendar above for exact timing.
What planting zone is St. Bernard Parish, LA?
St. Bernard Parish, Louisiana is in USDA Hardiness Zone 9b. The average last spring frost is February 2 and first fall frost is December 11.
Your St. Bernard Parish Garden Planner — Free
A 24-page printable planner built for St. Bernard Parish (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.