When to Plant Lemongrass in St. John the Baptist Parish, LA
April in the garden — St. John the Baptist Parish, Louisiana
We've pulled the most time-sensitive tasks for St. John the Baptist Parish, Louisiana this April and put them front and centre. Tackle them in order.
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Time to start lemongrass inside
Label every cell. You will absolutely forget which is which otherwise.
Before May arrives, get these ready
- First harvests: lemongrass
Lemongrass is a tropical grass with a strong citrus aroma used extensively in Southeast Asian cuisine. The swollen stem bases are the most flavorful part.
St. John the Baptist Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 20 and the first fall frost is December 1, giving you a growing season of approximately 284 days.
At an elevation of 309 feet, St. John the Baptist Parish receives approximately 53.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 103°F, so Lemongrass may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Lemongrass will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemongrass root diseases.
St. John the Baptist Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
4.8-6.1
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. John the Baptist Parish
How your county's soil matches Lemongrass's growing requirements.
Soil pH
Your soil pH (4.8–6.1) is more acidic than Lemongrass prefers (5.5–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in St. John the Baptist Parish warms quickly in spring but drains fast. Lemongrass will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Lemongrass.
Organic Matter
Organic matter is moderate (2.1%). Annual compost additions will help Lemongrass.
How to Plant Lemongrass
Succession Planting Lemongrass
Sow every 8.6 weeks. Last sowing by Aug 03 to harvest before frost.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Lemongrass
Lemongrass needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.
| Month | Lemongrass Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4" | 0" | ❄️ Dormant |
| Feb | 6.5" | 4" | 2.5" | 💧 Light watering |
| Mar | 6.5" | 4.6" | 1.9" | 💧 Light watering |
| Apr | 6.5" | 4" | 2.5" | 💧 Light watering |
| May | 6.5" | 4.7" | 1.8" | 💧 Light watering |
| Jun | 6.5" | 5" | 1.5" | 💧 Light watering |
| Jul | 6.5" | 6.3" | 0.2" | 💧 Light watering |
| Aug | 6.5" | 4.7" | 1.8" | 💧 Light watering |
| Sep | 6.5" | 4.3" | 2.2" | 💧 Light watering |
| Oct | 6.5" | 3.7" | 2.8" | 💧 Light watering |
| Nov | 6.5" | 3.5" | 3" | 💧 Light watering |
| Dec | 6.5" | 4.8" | 1.7" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in St. John the Baptist Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Lemongrass 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.
Lemongrass Planting Timeline — St. John the Baptist Parish, LA
Lemongrass Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 9 | Jan 9 – Jan 23 |
| Transplant Outdoors | February 27 | Feb 27 – Mar 13 |
| Direct Sow | February 27 | Feb 27 – Mar 20 |
| Harvest | May 15 | May 15 – Aug 14 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.5"/week · 1-2 times/week
📅 Days to Maturity
75–120 days
🧪 Soil pH
Needs 5.5–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
284 days in St. John the Baptist Parish
Growing Tips for Lemongrass in St. John the Baptist Parish
Direct sow Lemongrass outdoors after February 20 in St. John the Baptist Parish when soil has warmed and frost danger has passed.
Sandy soil in St. John the Baptist Parish dries quickly — mulch Lemongrass with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 103°F in St. John the Baptist Parish, provide afternoon shade for Lemongrass and water deeply in the morning.
Common pests for Lemongrass in this region include corn earworm and corn borers. Use row covers early in the season and inspect plants weekly.
General growing tips
Start from divisions or store-bought stalks rooted in water. Grow in rich, moist soil with full sun. In cold climates, grow in containers and overwinter indoors.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Lemongrass in Other Locations
Frequently Asked Questions
When should I plant Lemongrass in St. John the Baptist Parish, LA?
St. John the Baptist Parish is in Zone 9a with an average last frost of February 20. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.
What planting zone is St. John the Baptist Parish, LA?
St. John the Baptist Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 20 and first fall frost is December 1.
Your St. John the Baptist Parish Garden Planner — Free
A 24-page printable planner built for St. John the Baptist 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.