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When to Plant Celeriac in Hidalgo County, NM

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.

Hidalgo County, New Mexico is in USDA Zone 7b. The average last spring frost is April 22 and the first fall frost is October 28, giving you a growing season of approximately 189 days.

At an elevation of 2,926 feet, Hidalgo County receives approximately 11 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94ยฐF, providing good warmth for Celeriac during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Celeriac will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Celeriac successfully. Mulch heavily to conserve soil moisture.

Hidalgo County, NM (Zone 7b) Moderate season
189 days
Last Spring Frost April 22
189 growing days
First Fall Frost October 28

Hidalgo County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (48 days to spare)
Start indoors: Mar 13 Transplant: Apr 17 🍅 Harvest: Jul 31 – Sep 4
Recommended (50%) ✓ Fits season (49 days to spare)
Start indoors: Mar 18 Transplant: Apr 22 🍅 Harvest: Aug 5 – Sep 9
Safe Start (90%) ✓ Fits season (39 days to spare)
Start indoors: Apr 12 Transplant: May 17 🍅 Harvest: Aug 30 – Oct 4

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.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.2″/week
You supply
2.1″/week
Watering frequency 2-3 times/week
Season total 3,443 gal / 100 sq ft
Drought risk

Water stress score is 10/10 โ€” consider drought-tolerant varieties and mulching

Celeriac needs ~2,255 GDD — county provides 3,874 GDD Excellent fit

Celeriac Planting Timeline โ€” Hidalgo County, NM

Celeriac Planting Calendar

Activity When Date Range
Start Indoors March 18 Mar 18 โ€“ Apr 1
Transplant Outdoors April 22 Apr 22 โ€“ May 6
Direct Sow April 8 Apr 8 โ€“ Apr 29
Fall Sowing August 19 Aug 19 โ€“ Sep 2
Harvest August 5 Aug 5 โ€“ Sep 9

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

High โ€” keep soil consistently moist

Days to Maturity

100โ€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7b

Growing Season

189 days

Growing Tips for Hidalgo 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Celeriac in Hidalgo County, NM?

Hidalgo County is in Zone 7b with an average last frost of April 22. Plan your Celeriac planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hidalgo County, NM?

Hidalgo County, New Mexico is in USDA Hardiness Zone 7b. The average last spring frost is April 22 and first fall frost is October 28.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Hidalgo County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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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 Hidalgo County, NM. Local conditions may vary. Last updated: April 2026.