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When to Plant Oregano in Bernalillo County, NM

Bernalillo County, New Mexico Zone 7b May

May in the garden — Bernalillo County, New Mexico

May is a pivotal month for Bernalillo County, New Mexico gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 30
Avg. first frost October 14
Soil temp (4") 56°F
Watering Critical
Pest pressure Moderate
Daylight 13.8 hrs
  1. Set out oregano seedlings

    Frost risk is low now in Bernalillo County, New Mexico. If you've been covering beds overnight, you can stop.

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Oregano is a robust perennial herb essential to Italian and Greek cuisine. Its pungent, savory leaves intensify in flavor when dried.

Bernalillo County, New Mexico is in USDA Zone 7b. The average last spring frost is April 30 and the first fall frost is October 14, giving you a growing season of approximately 167 days.

At an elevation of 4,326 feet, Bernalillo County receives approximately 16.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91°F, providing good warmth for Oregano during the growing season. Sandy soil warms quickly in spring — great for early planting — but Oregano will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Oregano successfully. Mulch heavily to conserve soil moisture.

Bernalillo County, NM (Zone 7b) Moderate season
167 days
Last Spring Frost April 30
167 growing days
First Fall Frost October 14
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Bernalillo County Soil Profile

Soil Type

Sandy Loam

Soil pH

6.8-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (30 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 25 – Sep 3
Recommended (50%) ✓ Fits season (27 days to spare)
Transplant: May 7 🍅 Harvest: Jul 9 – Sep 17
Safe Start (90%) ✓ Fits season (25 days to spare)
Transplant: Jun 6 🍅 Harvest: Aug 8 – Oct 17

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 Bernalillo County

How your county's soil matches Oregano's growing requirements.

Soil pH

Your soil pH (6.8–8.2) overlaps with Oregano's range (6.0–8.0), though not a perfect match.

Soil Texture

Sandy soil in Bernalillo County warms quickly in spring but drains fast. Oregano will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Oregano.

Organic Matter

Organic matter is low (0.7%). Add 2-3 inches of compost before planting Oregano.

How to Plant Oregano

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Oregano

3
successive plantings in your 167-day season

Sow every 6.9 weeks. Last sowing by Jul 16 to harvest before frost.

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
0.4″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 10/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Oregano

Oregano needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Oregano Needs Rainfall You Supplement Action
Jan 1" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 0.8" 0" ❄️ Dormant
Apr 1.3" 0.5" 0.8" 🚿 Regular watering
May 1.3" 0.3" 1" 🚿 Regular watering
Jun 1.3" 0.6" 0.7" 🚿 Regular watering
Jul 1.3" 3.1" 0" ✅ Rainfall sufficient
Aug 1.3" 3.2" 0" ✅ Rainfall sufficient
Sep 1.3" 2.3" 0" ✅ Rainfall sufficient
Oct 1.3" 1.4" 0" ✅ Rainfall sufficient
Nov 1" 0" ❄️ Dormant
Dec 1.2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Bernalillo County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Oregano 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.

Oregano needs ~1,369 GDD — county provides 3,047 GDD Excellent fit

Oregano Planting Timeline — Bernalillo County, NM

Oregano Planting Calendar

Activity When Date Range
Transplant Outdoors May 7 May 7 – May 21
Harvest July 9 Jul 9 – Sep 17

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

Month-by-Month Timeline

MonthActivities
January
February
March
April
May Transplant Outdoors
June
July Harvest
August Harvest
September Harvest
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

167 days in Bernalillo County

Growing Tips for Oregano in Bernalillo County

Direct sow Oregano outdoors after April 30 in Bernalillo County when soil has warmed and frost danger has passed.

Sandy soil in Bernalillo County dries quickly — mulch Oregano with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

General growing tips

Start from seed, cuttings, or divisions. Harvest just before flowering for strongest flavor. Cut plants back to a few inches in spring to encourage vigorous new growth.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Oregano in Bernalillo County, NM?

Bernalillo County is in Zone 7b with an average last frost of April 30. Plan your Oregano planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bernalillo County, NM?

Bernalillo County, New Mexico is in USDA Hardiness Zone 7b. The average last spring frost is April 30 and first fall frost is October 14.

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Your Bernalillo County Garden Planner — Free

A 24-page printable planner built for Bernalillo 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.

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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 Bernalillo County, NM. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.