When to plant Celery in Rombauer, MO
The best window to plant Celery in Rombauer, is March 13–April 3, when soil warms to 50°F. Last frost typically hits March 27; first frost November 2. A second sowing from August 24 to September 7 extends the harvest into fall.
When to Plant Celery in Rombauer, MO
June in the garden — Butler County, Missouri
June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Butler County, Missouri.
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Harvest celery as they ripen
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
July prep starts now
- First harvests: celery
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.
Rombauer, Missouri is in USDA Zone 7b. The average last spring frost is March 27 and the first fall frost is November 2, giving you a growing season of approximately 220 days.
At an elevation of 703 feet, Butler County receives approximately 36.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Celery during the growing season.
Rombauer Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-6.6
Drainage
Well Drained
Celery 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 Rombauer
How your county's soil matches Celery's growing requirements.
Soil pH
Your soil pH (5.5–6.6) overlaps with Celery's range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Butler County is excellent for Celery — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.9%). Annual compost additions will help Celery.
How to Plant Celery
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Celery
Sow every 9.1 weeks. Last sowing by Jul 05 to harvest before frost.
For a dedicated fall crop, sow by Aug 24.
Celery Water Budget
Monthly Watering Guide for Celery
Celery needs approximately 1.3 inches of water per week (5.6" per month). Here's how your county's rainfall compares month by month.
| Month | Celery Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.5" | 0" | ❄️ Dormant |
| Feb | — | 1.6" | 0" | ❄️ Dormant |
| Mar | 5.6" | 2.5" | 3.1" | 🚿 Regular watering |
| Apr | 5.6" | 3.7" | 1.9" | 💧 Light watering |
| May | 5.6" | 4.8" | 0.8" | 💧 Light watering |
| Jun | 5.6" | 4.1" | 1.5" | 💧 Light watering |
| Jul | 5.6" | 3.7" | 1.9" | 💧 Light watering |
| Aug | 5.6" | 3.9" | 1.7" | 💧 Light watering |
| Sep | 5.6" | 3.6" | 2" | 💧 Light watering |
| Oct | 5.6" | 3" | 2.6" | 💧 Light watering |
| Nov | 5.6" | 2.3" | 3.3" | 🚿 Regular watering |
| Dec | — | 2.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Butler County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Celery 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.
Celery Planting Timeline — Rombauer, MO
Celery Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 20 | Feb 20 – Mar 6 |
| Transplant Outdoors | March 27 | Mar 27 – Apr 10 |
| Direct Sow | March 13 | Mar 13 – Apr 3 |
| Harvest | June 19 | Jun 19 – Aug 14 |
| Fall Sowing | August 24 | Aug 24 – Sep 7 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.3"/week · 1-2 times/week
📅 Days to Maturity
80–120 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 7b
📆 Growing Season
220 days in Butler County
Growing Tips for Celery in Rombauer
Direct sow Celery outdoors after March 27 in Butler County when soil has warmed and frost danger has passed.
Common pests for Celery in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
General growing tips
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
When should I plant Celery in Rombauer, MO?
In Rombauer, MO, plant Celery after the last frost (around March 27) and before the first frost (around November 2). Best results when soil holds above 50°F.
What growing zone is Rombauer, MO for Celery?
Rombauer sits in USDA Zone 7b. Celery grows reliably in zones 2a through 10b, so it's a good fit here.
Can Celery grow in Rombauer's climate?
Yes — Celery grows well in Rombauer's temperate climate. Rombauer averages a 220-day frost-free season, with last frost around March 27 and first frost around November 2.
Your Butler County Garden Planner — Free
A 22-page printable planner built for Butler County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.