When to Plant Microgreens in USDA Zone 8b
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.
In Zone 8b, the average last spring frost is around February 25 and the first fall frost is around November 28, giving you a growing season of approximately 276 days.
Microgreens Planting Timeline — Zone 8b
Where Is USDA Zone 8b?
The map below highlights the states that contain Zone 8b. Click any state to see the Microgreens planting schedule for that location.
Microgreens Planting Calendar — Zone 8b
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 21 | Jan 21 – Feb 4 |
| Transplant Outdoors | February 25 | Feb 25 – Mar 11 |
| Direct Sow | February 11 | Feb 11 – Mar 4 |
| Harvest | March 4 | Mar 4 – Apr 1 |
| Fall Sowing | September 19 | Sep 19 – Oct 3 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Direct Sow Harvest |
| April | Harvest |
| May | — |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | — |
Free Zone 8b Planting Calendar PDF
Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 8b with start dates, transplant windows, and harvest times.
Growing Conditions
Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
Days to Maturity
7–21 days
Soil pH
6 – 7
Zone Temperature Range
15°F to 20°F average annual minimum
Growing Season
276 days (Zone 8b average)
Planting Specifications
| Planting Depth | 0.5 inches |
| Plant Spacing | 2 inches apart |
| Row Spacing | 6 inches between rows |
Succession Planting Microgreens in Zone 8b
Sow every 0.7 weeks for continuous harvest throughout the season.
Growing Tips for Microgreens in Zone 8b
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.
Saving Microgreens Seeds
Recommended for Your Garden
Start seeds indoors with reusable cell trays and humidity domes.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Keep your garden organized with durable, weather-resistant plant labels.
Microgreens in Other Zones
Microgreens by State
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Frequently Asked Questions
When should I plant Microgreens in Zone 8b?
In Zone 8b, plan your Microgreens planting around the average last frost date of February 25. Start seeds indoors around January 21. Direct sow outdoors around February 11. Transplant seedlings around February 25.
Can Microgreens grow in Zone 8b?
Yes, Microgreens can grow well in Zone 8b, hardy in USDA zones 1a through 13b. Zone 8b has a growing season of approximately 276 days, which is sufficient for Microgreens (7-21 days to maturity).
When can I harvest Microgreens in Zone 8b?
In Zone 8b, expect to harvest Microgreens from March 4 – April 1. Microgreens takes 7-21 days from planting to harvest.
What is the last frost date for Zone 8b?
The average last spring frost in Zone 8b is around February 25, and the first fall frost is around November 28. This gives a growing season of approximately 276 days. These are 50% probability dates — actual frost dates vary year to year.
Plan Your Garden with Confidence
Get our free Garden Planner — organize your planting dates for Zone 8b, track your crops, and plan your garden season from seed to harvest.
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