When to plant Celery in Clay County, IA
Clay County's climate puts the Celery spring window between April 10 and May 1. time plantings around the expected last-frost window for best survival. A second sowing from August 2 to August 16 extends the harvest into fall.
When to Plant Celery in Clay County, IA
Celery is a marshland plant that requires consistent moisture and cool temperatures to produce crisp, flavorful stalks. It is a rewarding but demanding garden crop.
Clay County, Iowa is in USDA Zone 5a. The average last spring frost is April 24 and the first fall frost is October 11, giving you a growing season of approximately 170 days.
At an elevation of 984 feet, Clay County receives approximately 34.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Celery to ensure they mature before fall.
Clay County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Celery Planting Timeline — Clay County, IA
Celery Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 20 | Mar 20 – Apr 3 |
| Transplant Outdoors | April 24 | Apr 24 – May 8 |
| Direct Sow | April 10 | Apr 10 – May 1 |
| Harvest | July 17 | Jul 17 – Sep 11 |
| Fall Sowing | August 2 | Aug 2 – Aug 16 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
High — keep soil consistently moist
📅 Days to Maturity
80–120 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
170 days in Clay County
Growing Tips for Clay County
Start seeds indoors 10-12 weeks before last frost. Keep soil consistently moist and never let it dry out. Blanch stalks by mounding soil or using collars for milder flavor.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Celery in Other Locations
Frequently Asked Questions
When should I plant Celery in Clay County, IA?
Clay County is in Zone 5a with an average last frost of April 24. Plan your Celery planting based on this frost date — see the calendar above for exact timing.
What planting zone is Clay County, IA?
Clay County, Iowa is in USDA Hardiness Zone 5a. The average last spring frost is April 24 and first fall frost is October 11.
When should I plant Celery in Clay County, IA?
In Clay County, IA, plant Celery after the last frost (around April 24) and before the first frost (around October 11). Best results when soil holds above 50°F.
What growing zone is Clay County, IA for Celery?
Clay County sits in USDA Zone 5a. Celery grows reliably in zones 2a through 10b, so it's a good fit here.
Can Celery grow in Clay County's climate?
Yes — Celery grows well in Clay County's temperate climate. Clay County averages a 170-day frost-free season, with last frost around April 24 and first frost around October 11.
Your Clay County Garden Planner — Free
A 22-page printable planner built for Clay 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.