When to plant Celery in Warren County, IA
In Zone 5b (Warren County), direct-sow Celery between April 12 and May 3 for spring, after the April 26 last-frost mark. A second sowing from July 31 to August 14 extends the harvest into fall.
When to Plant Celery in Warren 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.
Warren County, Iowa is in USDA Zone 5b. The average last spring frost is April 26 and the first fall frost is October 9, giving you a growing season of approximately 166 days.
At an elevation of 853 feet, Warren County receives approximately 30.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Celery during the growing season.
Warren County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Celery Planting Timeline — Warren County, IA
Celery Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 22 | Mar 22 – Apr 5 |
| Transplant Outdoors | April 26 | Apr 26 – May 10 |
| Direct Sow | April 12 | Apr 12 – May 3 |
| Harvest | July 19 | Jul 19 – Sep 13 |
| Fall Sowing | July 31 | Jul 31 – Aug 14 |
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 | Fall Sowing 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 5b
📆 Growing Season
166 days in Warren County
Growing Tips for Warren 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 Warren County, IA?
Warren County is in Zone 5b with an average last frost of April 26. Plan your Celery planting based on this frost date — see the calendar above for exact timing.
What planting zone is Warren County, IA?
Warren County, Iowa is in USDA Hardiness Zone 5b. The average last spring frost is April 26 and first fall frost is October 9.
When should I plant Celery in Warren County, IA?
In Warren County, IA, plant Celery after the last frost (around April 26) and before the first frost (around October 9). Best results when soil holds above 50°F.
What growing zone is Warren County, IA for Celery?
Warren County sits in USDA Zone 5b. Celery grows reliably in zones 2a through 10b, so it's a good fit here.
Can Celery grow in Warren County's climate?
Yes — Celery grows well in Warren County's temperate climate. Warren County averages a 166-day frost-free season, with last frost around April 26 and first frost around October 9.
Your Warren County Garden Planner — Free
A 22-page printable planner built for Warren County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.