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When to Plant Ground Cherry in Otero County, NM

Otero County, New Mexico Zone 8a May

This month in Otero County, New Mexico

May is a pivotal month for Otero 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 18
Soil temp (4") 58°F
Watering Critical
Pest pressure Moderate
Daylight 13.7 hrs
  1. Transplant ground cherry outside

    Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.

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Ground cherries produce small, sweet, tropical-tasting berries enclosed in papery husks. They are related to tomatillos and cape gooseberries and self-sow readily.

Otero County, New Mexico is in USDA Zone 8a. The average last spring frost is April 30 and the first fall frost is October 18, giving you a growing season of approximately 171 days.

At an elevation of 4,369 feet, Otero County receives approximately 13.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 88°F, providing good warmth for Ground Cherry during the growing season. Sandy soil warms quickly in spring — great for early planting — but Ground Cherry will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Ground Cherry successfully. Mulch heavily to conserve soil moisture.

Otero County, NM (Zone 8a) Moderate season
171 days
Last Spring Frost April 30
171 growing days
First Fall Frost October 18
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Otero 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 (21 days to spare)
Transplant: May 16 🍅 Harvest: Jul 25 – Sep 19
Recommended (50%) ✓ Fits season (24 days to spare)
Transplant: May 21 🍅 Harvest: Jul 30 – Sep 24
Safe Start (90%) ✓ Fits season (23 days to spare)
Transplant: Jun 4 🍅 Harvest: Aug 13 – Oct 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 Otero County

How your county's soil matches Ground Cherry's growing requirements.

Soil pH

Your soil pH (7.2–8.7) is more alkaline than Ground Cherry prefers (6.0–7.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Ground Cherry.

Organic Matter

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

How to Plant Ground Cherry

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Ground Cherry

3
successive plantings in your 171-day season

Sow every 7.4 weeks. Last sowing by Jul 30 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.3″/week
You supply
1.2″/week
Watering frequency 2-3 times/week
Season total 1,755 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Ground Cherry

Ground Cherry needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Ground Cherry Needs Rainfall You Supplement Action
Jan 1" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 0.9" 0" ❄️ Dormant
Apr 4.3" 0.5" 3.8" 🚿 Regular watering
May 4.3" 0.3" 4" 🚿 Regular watering
Jun 4.3" 0.5" 3.8" 🚿 Regular watering
Jul 4.3" 2" 2.3" 🚿 Regular watering
Aug 4.3" 2.8" 1.5" 💧 Light watering
Sep 4.3" 2.1" 2.2" 🚿 Regular watering
Oct 4.3" 1.2" 3.1" 🚿 Regular watering
Nov 0.8" 0" ❄️ Dormant
Dec 0.9" 0" ❄️ Dormant

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

Ground Cherry 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.

Ground Cherry needs ~1,160 GDD — county provides 2,736 GDD Excellent fit

Ground Cherry Planting Timeline — Otero County, NM

Ground Cherry Planting Calendar

Activity When Date Range
Transplant Outdoors May 21 May 21 – Jun 4
Harvest July 30 Jul 30 – Sep 24

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 2-3 times/week

📅 Days to Maturity

65–80 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8a

📆 Growing Season

171 days in Otero County

Growing Tips for Ground Cherry in Otero County

Direct sow Ground Cherry outdoors after April 30 in Otero County when soil has warmed and frost danger has passed.

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

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

Otero County receives only 14" of rain annually. Ground Cherry needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Let fruits fall to the ground naturally when ripe inside their husks. The husk turns brown and papery when the fruit is ready.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Ground Cherry in Otero County, NM?

Otero County is in Zone 8a with an average last frost of April 30. Plan your Ground Cherry planting based on this frost date — see the calendar above for exact timing.

What planting zone is Otero County, NM?

Otero County, New Mexico is in USDA Hardiness Zone 8a. The average last spring frost is April 30 and first fall frost is October 18.

🌱

Your Otero County Garden Planner — Free

A 24-page printable planner built for Otero 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 Otero 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.