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When to Plant Radish in Eddy County, NM

Eddy County, New Mexico Zone 8a July

July in the garden — Eddy County, New Mexico

Your garden in Eddy County, New Mexico is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost April 7
Avg. first frost November 2
Soil temp (4") 78°F
Watering High
Pest pressure High
Daylight 13.9 hrs
Before August arrives, get these ready
  • Fall sowing: radish

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Radishes are one of the fastest-growing vegetables, with some varieties ready in under a month. They come in round, elongated, and large winter types.

Eddy County, New Mexico is in USDA Zone 8a. The average last spring frost is April 7 and the first fall frost is November 2, giving you a growing season of approximately 209 days.

At an elevation of 3,690 feet, Eddy County receives approximately 11.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 92°F, providing good warmth for Radish during the growing season. Sandy soil warms quickly in spring — great for early planting — but Radish will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Radish successfully. Mulch heavily to conserve soil moisture.

Eddy County, NM (Zone 8a) Long season
209 days
Last Spring Frost April 7
209 growing days
First Fall Frost November 2

Eddy County Soil Profile

Soil Type

Sandy Loam

Soil pH

6.7-8.5

Drainage

Well Drained

Radish Planting Risk Windows

Early Start (70% safe) ✓ Fits season (166 days to spare)
Transplant: Mar 26 🍅 Harvest: Apr 23 – May 14
Recommended (50%) ✓ Fits season (160 days to spare)
Transplant: Apr 7 🍅 Harvest: May 5 – May 26
Safe Start (90%) ✓ Fits season (163 days to spare)
Transplant: Apr 20 🍅 Harvest: May 18 – Jun 8

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 Eddy County

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

Soil pH

Your soil pH (6.7–8.5) is more alkaline than Radish prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Radish.

Organic Matter

Organic matter is low (0.8%). Add 2-3 inches of compost before planting Radish.

How to Plant Radish

0.5"
Planting Depth
2"
Between Plants
6"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Radish

12
successive plantings in your 209-day season

Sow every 2.4 weeks. Last sowing by Sep 28 to harvest before frost.

For a dedicated fall crop, sow by Aug 24.

Radish Water Budget

Plant needs
0.5″/week
Rainfall provides
0.2″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 922 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Radish

Radish needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Radish Needs Rainfall You Supplement Action
Jan 0.7" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 0.6" 0" ❄️ Dormant
Apr 2.2" 0.4" 1.8" 🚿 Regular watering
May 2.2" 0.3" 1.9" 🚿 Regular watering
Jun 2.2" 0.5" 1.7" 🚿 Regular watering
Jul 2.2" 2.1" 0.1" 💧 Light watering
Aug 2.2" 2.6" 0" ✅ Rainfall sufficient
Sep 2.2" 1.6" 0.6" 💧 Light watering
Oct 2.2" 1" 1.2" 🚿 Regular watering
Nov 2.2" 0.6" 1.6" 🚿 Regular watering
Dec 0.8" 0" ❄️ Dormant

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

Radish 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.

Radish needs ~542 GDD — county provides 3,971 GDD Excellent fit

Radish Planting Timeline — Eddy County, NM

Radish Planting Calendar

Activity When Date Range
Direct Sow March 24 Mar 24 – Apr 14
Harvest April 21 Apr 21 – May 12
Fall Sowing August 24 Aug 24 – Sep 7

Plant 0.5" deep · 2" apart · Rows 6" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · 1-2 times/week

📅 Days to Maturity

22–35 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8a

📆 Growing Season

209 days in Eddy County

Growing Tips for Radish in Eddy County

Direct sow Radish outdoors after April 07 in Eddy County when soil has warmed and frost danger has passed.

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

Summer highs in Eddy County reach 92°F — grow Radish as a spring or fall crop. Use shade cloth if planting in summer.

Your generous 209.0-day season in Eddy County allows multiple plantings of Radish. Sow every 11.0 days for continuous harvest.

Common pests for Radish in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.

Companion Planting

Good Companions

Avoid Planting Near

  • Hyssop

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Radish in Eddy County, NM?

Eddy County is in Zone 8a with an average last frost of April 7. Plan your Radish planting based on this frost date — see the calendar above for exact timing.

What planting zone is Eddy County, NM?

Eddy County, New Mexico is in USDA Hardiness Zone 8a. The average last spring frost is April 7 and first fall frost is November 2.

🌱

Your Eddy County Garden Planner — Free

A 22-page printable planner built for Eddy County (Zone 8a). 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 Eddy County, NM. Local conditions may vary. Last updated: July 2026.

Sources & credits

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