When to Plant Microgreens in Lafayette Parish, LA
This month in Lafayette Parish, Louisiana
A quick May briefing for Lafayette Parish, Louisiana gardeners — what's urgent, what's next, and what can wait.
Microgreens are young seedlings of vegetables and herbs harvested at the cotyledon or first true leaf stage. They pack concentrated flavors and nutrients in a tiny package.
Lafayette Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 5, giving you a growing season of approximately 295 days.
At an elevation of 129 feet, Lafayette Parish receives approximately 48.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 104°F, so Microgreens may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Microgreens will need more frequent watering and organic matter to retain nutrients.
Lafayette Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
4.8-6.4
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 Lafayette Parish
How your county's soil matches Microgreens's growing requirements.
Soil pH
Your soil pH (4.8–6.4) is more acidic than Microgreens prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Lafayette Parish warms quickly in spring but drains fast. Microgreens will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Microgreens.
Organic Matter
Organic matter is low (1.8%). Add 2-3 inches of compost before planting Microgreens.
How to Plant Microgreens
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Microgreens
Sow every 0.7 weeks. Last sowing by Nov 14 to harvest before frost.
For a dedicated fall crop, sow by Oct 10.
Plant Water Budget
Monthly Watering Guide for Microgreens
Microgreens needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Microgreens Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.6" | 0" | ❄️ Dormant |
| Feb | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Mar | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| May | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Oct | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Nov | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Dec | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in Lafayette Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Microgreens 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.
Microgreens Planting Timeline — Lafayette Parish, LA
Microgreens Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 16 | Jan 16 – Jan 30 |
| Transplant Outdoors | February 13 | Feb 13 – Feb 27 |
| Direct Sow | January 23 | Jan 23 – Feb 13 |
| Harvest | February 20 | Feb 20 – Mar 20 |
| Fall Sowing | October 10 | Oct 10 – Oct 24 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Transplant Outdoors Direct Sow Harvest |
| March | Harvest |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
7–21 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
295 days in Lafayette Parish
Growing Tips for Microgreens in Lafayette Parish
Direct sow Microgreens outdoors after February 13 in Lafayette Parish when soil has warmed and frost danger has passed.
Sandy soil in Lafayette Parish dries quickly — mulch Microgreens 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 Lafayette Parish, provide afternoon shade for Microgreens and water deeply in the morning.
Your generous 296.0-day season in Lafayette Parish allows multiple plantings of Microgreens. Sow every 3.0 days for continuous harvest.
General growing tips
Sow seeds densely on shallow trays of moist growing medium. Cover until germination, then provide light. Harvest with scissors when 1-3 inches tall. Grow year-round indoors.
Microgreens in Other Locations
Frequently Asked Questions
When should I plant Microgreens in Lafayette Parish, LA?
Lafayette Parish is in Zone 9a with an average last frost of February 13. Plan your Microgreens planting based on this frost date — see the calendar above for exact timing.
What planting zone is Lafayette Parish, LA?
Lafayette Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 13 and first fall frost is December 5.
Your Lafayette Parish Garden Planner — Free
A 24-page printable planner built for Lafayette 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.