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When to plant Celeriac in Beaverhead County, MT

For Beaverhead County, gardeners: plant Celeriac May 27 through June 17 once soil reads 50°F. A second sowing from July 4 to July 18 extends the harvest into fall.

When to Plant Celeriac in Beaverhead County, MT

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.

Beaverhead County, Montana is in USDA Zone 5a. The average last spring frost is June 10 and the first fall frost is September 12, giving you a growing season of approximately 94 days.

At an elevation of 7,645 feet, Beaverhead County receives approximately 15.7 inches of rainfall annually with predominantly loam soil. Summer highs average 80°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.

Beaverhead County, MT (Zone 5a) Very short season
94 days
Last Spring Frost June 10
94 growing days
First Fall Frost September 12

Beaverhead County Soil Profile

Soil Type

Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Celeriac Planting Timeline — Beaverhead County, MT

Celeriac Planting Calendar

Activity When Date Range
Start Indoors May 6 May 6 – May 20
Transplant Outdoors June 10 Jun 10 – Jun 24
Direct Sow May 27 May 27 – Jun 17
Harvest September 23 Sep 23 – Oct 28
Fall Sowing July 4 Jul 4 – Jul 18

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May Start Indoors Direct Sow
June Transplant Outdoors Direct Sow
July Fall Sowing
August
September Harvest
October Harvest
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

High — keep soil consistently moist

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 5a

📆 Growing Season

94 days in Beaverhead County

Growing Tips for Beaverhead County

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

Avoid Planting Near

  • Carrots
  • Parsnip

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celeriac in Beaverhead County, MT?

Beaverhead County is in Zone 5a 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 Beaverhead County, MT?

Beaverhead County, Montana is in USDA Hardiness Zone 5a. The average last spring frost is June 10 and first fall frost is September 12.

When should I plant Celeriac in Beaverhead County, MT?

In Beaverhead County, MT, plant Celeriac after the last frost (around June 10) and before the first frost (around September 12). Best results when soil holds above 50°F.

What growing zone is Beaverhead County, MT for Celeriac?

Beaverhead County sits in USDA Zone 5a. Celeriac grows reliably in zones 3a through 9b, so it's a good fit here.

Can Celeriac grow in Beaverhead County's climate?

Yes — Celeriac grows well in Beaverhead County's temperate climate. Beaverhead County averages a 94-day frost-free season, with last frost around June 10 and first frost around September 12.

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Your Beaverhead County Garden Planner — Free

A 22-page printable planner built for Beaverhead 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.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Beaverhead County, MT. Local conditions may vary. Last updated: June 2026.

Sources & credits

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