When to plant Celeriac in Meagher County, MT
Celeriac planted in Meagher County between June 3 and June 24 matures in 100–120 days — well before the September 8 first frost. A second sowing from June 16 to June 30 extends the harvest into fall.
When to Plant Celeriac in Meagher County, MT
June to-do list for Meagher County, Montana
If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.
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Move celeriac into the garden
Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.
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Sow celeriac where they'll grow
Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.
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Get celeriac in for a late-season harvest
Mid-season soil is hot. Sow a bit deeper than the packet suggests to find cooler, damper ground.
To set up a strong July, finish these tasks
- Starting indoors: celeriac
Celeriac is a celery relative grown for its knobby, flavorful root rather than its stalks. It has a rich celery flavor and is excellent roasted, mashed, or in soups.
Meagher County, Montana is in USDA Zone 4b. The average last spring frost is June 10 and the first fall frost is September 8, giving you a growing season of approximately 90 days.
At an elevation of 5,072 feet, Meagher County receives approximately 14.2 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Celeriac to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Celeriac successfully. Mulch heavily to conserve soil moisture.
Meagher County Soil Profile
Soil Type
Loam
Soil pH
6.5-8
Drainage
Well Drained
Celeriac 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 Meagher County
How your county's soil matches Celeriac's growing requirements.
Soil pH
Your soil pH (6.5–8.0) is more alkaline than Celeriac prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Meagher County is excellent for Celeriac — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Celeriac.
How to Plant Celeriac
Fall planting: Sow 12 weeks before your first frost date for a fall harvest.
Celeriac Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Celeriac
Celeriac needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.
| Month | Celeriac Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1" | 0" | ❄️ Dormant |
| Feb | — | 0.8" | 0" | ❄️ Dormant |
| Mar | — | 1.4" | 0" | ❄️ Dormant |
| Apr | — | 1.4" | 0" | ❄️ Dormant |
| May | — | 1.9" | 0" | ❄️ Dormant |
| Jun | 3.9" | 0.9" | 3" | 🚿 Regular watering |
| Jul | 3.9" | 1.1" | 2.8" | 🚿 Regular watering |
| Aug | 3.9" | 1.5" | 2.4" | 🚿 Regular watering |
| Sep | 3.9" | 1.1" | 2.8" | 🚿 Regular watering |
| Oct | — | 1.3" | 0" | ❄️ Dormant |
| Nov | — | 1" | 0" | ❄️ Dormant |
| Dec | — | 0.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Jun–Sep in Meagher County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Celeriac 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.
Celeriac Planting Timeline — Meagher County, MT
Celeriac Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 29 | Apr 29 – May 13 |
| Transplant Outdoors | June 10 | Jun 10 – Jun 24 |
| Direct Sow | June 3 | Jun 3 – Jun 24 |
| Harvest | September 23 | Sep 23 – Oct 28 |
| Fall Sowing | June 16 | Jun 16 – Jun 30 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Start Indoors |
| June | Transplant Outdoors Direct Sow Fall Sowing |
| July | — |
| August | — |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.9"/week · Only during dry spells
📅 Days to Maturity
100–120 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 4b
📆 Growing Season
90 days in Meagher County
Growing Tips for Celeriac in Meagher County
Direct sow Celeriac outdoors after June 10 in Meagher County when soil has warmed and frost danger has passed.
Your 90.0-day growing season in Meagher County is tight for Celeriac (100.0-120.0 days to maturity). Start indoors and choose early-maturing varieties.
Common pests for Celeriac in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
Meagher County receives only 14" of rain annually. Celeriac needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Start seeds indoors 10-12 weeks before last frost. Remove side roots as they develop to encourage a single large bulb. Harvest after a light frost for best flavor.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Celeriac in Other Locations
Frequently Asked Questions
When should I plant Celeriac in Meagher County, MT?
Meagher County is in Zone 4b with an average last frost of June 10. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.
What planting zone is Meagher County, MT?
Meagher County, Montana is in USDA Hardiness Zone 4b. The average last spring frost is June 10 and first fall frost is September 8.
When should I plant Celeriac in Meagher County, MT?
In Meagher County, MT, plant Celeriac after the last frost (around June 10) and before the first frost (around September 8). Best results when soil holds above 50°F.
What growing zone is Meagher County, MT for Celeriac?
Meagher County sits in USDA Zone 4b. Celeriac grows reliably in zones 3a through 9b, so it's a good fit here.
Can Celeriac grow in Meagher County's climate?
Yes — Celeriac grows well in Meagher County's temperate climate. Meagher County averages a 90-day frost-free season, with last frost around June 10 and first frost around September 8.
Your Meagher County Garden Planner — Free
A 22-page printable planner built for Meagher County (Zone 4b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.