When to plant Microgreens in Clinton County, IA
For Microgreens in Clinton County, the safe spring window opens around April 3 and closes around April 24. Last expected frost is April 17, first fall frost October 16, giving a 182-day growing season. A second sowing from August 7 to August 21 extends the harvest into fall.
When to Plant Microgreens in Clinton County, IA
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.
Clinton County, Iowa is in USDA Zone 5a. The average last spring frost is April 17 and the first fall frost is October 16, giving you a growing season of approximately 182 days.
At an elevation of 964 feet, Clinton County receives approximately 38 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Microgreens to ensure they mature before fall.
Clinton County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Microgreens Planting Timeline — Clinton County, IA
Microgreens Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 13 | Mar 13 – Mar 27 |
| Transplant Outdoors | April 17 | Apr 17 – May 1 |
| Direct Sow | April 3 | Apr 3 – Apr 24 |
| Harvest | April 24 | Apr 24 – May 22 |
| Fall Sowing | August 7 | Aug 7 – Aug 21 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow Harvest |
| May | Transplant Outdoors Harvest |
| June | — |
| July | — |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
7–21 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
182 days in Clinton County
Growing Tips for Clinton County
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 Clinton County, IA?
Clinton County is in Zone 5a with an average last frost of April 17. Plan your Microgreens planting based on this frost date — see the calendar above for exact timing.
What planting zone is Clinton County, IA?
Clinton County, Iowa is in USDA Hardiness Zone 5a. The average last spring frost is April 17 and first fall frost is October 16.
When should I plant Microgreens in Clinton County, IA?
In Clinton County, IA, plant Microgreens after the last frost (around April 17) and before the first frost (around October 16). Best results when soil holds above 50°F.
What growing zone is Clinton County, IA for Microgreens?
Clinton County sits in USDA Zone 5a. Microgreens grows reliably in zones 1a through 13b, so it's a good fit here.
Can Microgreens grow in Clinton County's climate?
Yes — Microgreens grows well in Clinton County's temperate climate. Clinton County averages a 182-day frost-free season, with last frost around April 17 and first frost around October 16.
Your Clinton County Garden Planner — Free
A 22-page printable planner built for Clinton County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.