When to plant Microgreens in Yulee, FL
Plant Microgreens in Yulee from January 24 to February 14 in spring. Yulee sits in USDA Zone 9a, with last frost around February 14 and first frost on December 1. A second sowing from October 6 to October 20 extends the harvest into fall.
When to Plant Microgreens in Yulee, FL
What to do in July
If you only do a handful of things in the garden this July, make it these. They're sequenced around your zone's frost timing.
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.
Yulee, Florida is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 1, giving you a growing season of approximately 290 days.
At an elevation of 408 feet, Nassau County receives approximately 57.9 inches of rainfall annually with predominantly sand soil. Summer highs average 101°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. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Microgreens root diseases.
Yulee Soil Profile
Soil Type
Sand
Soil pH
5.2-5.8
Drainage
Well Drained
Microgreens 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 Yulee
How your county's soil matches Microgreens's growing requirements.
Soil pH
Your soil pH (5.2–5.8) is more acidic than Microgreens prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Nassau County warms quickly in spring but drains fast. Microgreens will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.4%). 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 10 to harvest before frost.
For a dedicated fall crop, sow by Oct 06.
Microgreens 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 | — | 2.8" | 0" | ❄️ Dormant |
| Feb | 4.3" | 3.2" | 1.1" | 💧 Light watering |
| Mar | 4.3" | 3.7" | 0.6" | 💧 Light watering |
| Apr | 4.3" | 2.9" | 1.4" | 💧 Light watering |
| May | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Jun | 4.3" | 6.6" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 7.9" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 8.7" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 7.9" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 5.3" | 0" | ✅ Rainfall sufficient |
| Nov | 4.3" | 2.2" | 2.1" | 💧 Light watering |
| Dec | 4.3" | 2.5" | 1.8" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in Nassau County). 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 — Yulee, FL
Microgreens Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 17 | Jan 17 – Jan 31 |
| Transplant Outdoors | February 14 | Feb 14 – Feb 28 |
| Direct Sow | January 24 | Jan 24 – Feb 14 |
| Harvest | February 21 | Feb 21 – Mar 21 |
| Fall Sowing | October 6 | Oct 6 – Oct 20 |
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
290 days in Nassau County
Growing Tips for Microgreens in Yulee
Direct sow Microgreens outdoors after February 14 in Nassau County when soil has warmed and frost danger has passed.
Sandy soil in Nassau County 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 101°F in Nassau County, provide afternoon shade for Microgreens and water deeply in the morning.
Your generous 291.0-day season in Nassau County 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
When should I plant Microgreens in Yulee, FL?
In Yulee, FL, plant Microgreens after the last frost (around February 14) and before the first frost (around December 1). Best results when soil holds above 50°F.
What growing zone is Yulee, FL for Microgreens?
Yulee sits in USDA Zone 9a. Microgreens grows reliably in zones 1a through 13b, so it's a good fit here.
Can Microgreens grow in Yulee's climate?
Yes — Microgreens grows well in Yulee's temperate climate. Yulee averages a 291-day frost-free season, with last frost around February 14 and first frost around December 1.
Your Nassau County Garden Planner — Free
A 22-page printable planner built for Nassau County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.