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When to Plant Eggplant in Eddy County, NM

Eggplant is a heat-loving solanaceous crop that produces glossy fruits in purple, white, or striped varieties. It requires long, warm growing seasons for best production.

Eddy County, New Mexico is in USDA Zone 7b. 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 92ยฐF, providing good warmth for Eggplant during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Eggplant will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Eggplant successfully. Mulch heavily to conserve soil moisture.

Eddy County, NM (Zone 7b) 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

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (68 days to spare)
Start indoors: Jan 22 Transplant: Apr 9 🍅 Harvest: Jun 18 – Aug 20
Recommended (50%) ✓ Fits season (62 days to spare)
Start indoors: Feb 3 Transplant: Apr 21 🍅 Harvest: Jun 30 – Sep 1
Safe Start (90%) ✓ Fits season (65 days to spare)
Start indoors: Feb 16 Transplant: May 4 🍅 Harvest: Jul 13 – Sep 14

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 Eggplant's growing requirements.

Soil pH

Your soil pH (6.7โ€“8.5) is more alkaline than Eggplant prefers (5.5โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Eggplant.

Organic Matter

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

How to Plant Eggplant

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Eggplant

3
successive plantings in your 209-day season

Sow every 7.4 weeks. Last sowing by Aug 09 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.2″/week
You supply
1.4″/week
Watering frequency 2-3 times/week
Season total 2,663 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Eggplant

Eggplant needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Eggplant Needs Rainfall You Supplement Action
Jan โ€” 0.7" 0" โ„๏ธ Dormant
Feb โ€” 0.7" 0" โ„๏ธ Dormant
Mar โ€” 0.6" 0" โ„๏ธ Dormant
Apr 4.8" 0.4" 4.4" ๐Ÿšฟ Regular watering
May 4.8" 0.3" 4.5" ๐Ÿšฟ Regular watering
Jun 4.8" 0.5" 4.3" ๐Ÿšฟ Regular watering
Jul 4.8" 2.1" 2.7" ๐Ÿšฟ Regular watering
Aug 4.8" 2.6" 2.2" ๐Ÿ’ง Light watering
Sep 4.8" 1.6" 3.2" ๐Ÿšฟ Regular watering
Oct 4.8" 1" 3.8" ๐Ÿšฟ Regular watering
Nov 4.8" 0.6" 4.2" ๐Ÿšฟ Regular watering
Dec โ€” 0.8" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Nov in Eddy County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Eggplant 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" โ€” every day above 50ยฐF 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.

Eggplant needs ~1,425 GDD — county provides 3,971 GDD Excellent fit

Eggplant Planting Timeline โ€” Eddy County, NM

Eggplant Planting Calendar

Activity When Date Range
Start Indoors February 3 Feb 3 โ€“ Feb 17
Transplant Outdoors April 21 Apr 21 โ€“ May 5
Direct Sow April 14 Apr 14 โ€“ May 5
Harvest June 30 Jun 30 โ€“ Sep 1

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.1"/week ยท 2-3 times/week

๐Ÿ“… Days to Maturity

65โ€“85 days

๐Ÿงช Soil pH

Needs 5.5โ€“7 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

209 days in Eddy County

Growing Tips for Eggplant in Eddy County

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

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

Common pests for Eggplant in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

Eddy County receives only 12" of rain annually. Eggplant needs consistent moisture โ€” install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 8-10 weeks before last frost. Transplant only after nighttime temperatures stay above 55F. Mulch to retain moisture and warmth around roots.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Kohlrabi

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Eggplant in Eddy County, NM?

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

What planting zone is Eddy County, NM?

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

๐ŸŒฑ

Plan Your Garden with Confidence

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

Get Your Free Garden Planner →

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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: April 2026.