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When to Plant Epazote in Rio Arriba County, NM

Epazote is a pungent Mexican herb traditionally cooked with black beans to reduce their gas-causing properties. It has a strong, unique flavor that is an acquired taste.

Rio Arriba County, New Mexico is in USDA Zone 5b. The average last spring frost is June 13 and the first fall frost is September 17, giving you a growing season of approximately 96 days.

At an elevation of 5,979 feet, Rio Arriba County receives approximately 17.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Epazote to ensure they mature before fall. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Epazote will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Epazote successfully. Mulch heavily to conserve soil moisture.

Rio Arriba County, NM (Zone 5b) Very short season
96 days
Last Spring Frost June 13
96 growing days
First Fall Frost September 17

Rio Arriba County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.3-8.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Apr 18 Transplant: Jun 20 🍅 Harvest: Aug 8 – Oct 3
Recommended (50%) ✗ May not fit
Start indoors: Apr 25 Transplant: Jun 27 🍅 Harvest: Aug 15 – Oct 10
Safe Start (90%) ✗ May not fit
Start indoors: May 6 Transplant: Jul 8 🍅 Harvest: Aug 26 – Oct 21

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
0.5″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Epazote needs ~682 GDD — county provides 1,248 GDD Excellent fit

Epazote Planting Timeline โ€” Rio Arriba County, NM

Epazote Planting Calendar

Activity When Date Range
Start Indoors April 25 Apr 25 โ€“ May 9
Transplant Outdoors June 27 Jun 27 โ€“ Jul 11
Direct Sow June 20 Jun 20 โ€“ Jul 11
Harvest August 15 Aug 15 โ€“ Oct 10

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

45โ€“60 days

Soil pH

6 โ€“ 8

USDA Zone

Zone 5b

Growing Season

96 days

Growing Tips for Rio Arriba County

Direct sow after last frost. Epazote grows easily and self-sows aggressively. Use sparingly in cooking as the flavor is very strong. Harvest leaves before flowering for best flavor.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Epazote in Rio Arriba County, NM?

Rio Arriba County is in Zone 5b with an average last frost of June 13. Plan your Epazote planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Rio Arriba County, NM?

Rio Arriba County, New Mexico is in USDA Hardiness Zone 5b. The average last spring frost is June 13 and first fall frost is September 17.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Rio Arriba County gardeners in Zone 5b 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 Rio Arriba County, NM. Local conditions may vary. Last updated: April 2026.