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When to Plant Ground Cherry in Roosevelt County, NM

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

Roosevelt County, New Mexico is in USDA Zone 7a. The average last spring frost is April 18 and the first fall frost is October 22, giving you a growing season of approximately 187 days.

At an elevation of 3,802 feet, Roosevelt County receives approximately 18 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 89ยฐF, providing good warmth for Ground Cherry during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” 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.

Roosevelt County, NM (Zone 7a) Moderate season
187 days
Last Spring Frost April 18
187 growing days
First Fall Frost October 22

Roosevelt County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (38 days to spare)
Transplant: May 4 🍅 Harvest: Jul 13 – Sep 7
Recommended (50%) ✓ Fits season (40 days to spare)
Transplant: May 9 🍅 Harvest: Jul 18 – Sep 12
Safe Start (90%) ✓ Fits season (44 days to spare)
Transplant: May 23 🍅 Harvest: Aug 1 – Sep 26

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 Roosevelt County

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

Soil pH

Your soil pH (7.2โ€“8.4) is more alkaline than Ground Cherry prefers (6.0โ€“7.5). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Roosevelt 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 187-day season

Sow every 7.4 weeks. Last sowing by Aug 03 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.4″/week
You supply
1.1″/week
Watering frequency 2-3 times/week
Season total 1,789 gal / 100 sq ft
Drought risk

Water stress score is 10/10 โ€” 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 โ€” 1.3" 0" โ„๏ธ Dormant
Feb โ€” 0.9" 0" โ„๏ธ Dormant
Mar โ€” 1.1" 0" โ„๏ธ Dormant
Apr 4.3" 0.5" 3.8" ๐Ÿšฟ Regular watering
May 4.3" 0.3" 4" ๐Ÿšฟ Regular watering
Jun 4.3" 0.6" 3.7" ๐Ÿšฟ Regular watering
Jul 4.3" 3.3" 1" ๐Ÿ’ง Light watering
Aug 4.3" 3.9" 0.4" ๐Ÿ’ง Light watering
Sep 4.3" 2.6" 1.7" ๐Ÿ’ง Light watering
Oct 4.3" 1.4" 2.9" ๐Ÿšฟ Regular watering
Nov โ€” 1" 0" โ„๏ธ Dormant
Dec โ€” 1" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Roosevelt County). Supplement amounts are based on average rainfall โ€” 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" 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.

Ground Cherry needs ~1,214 GDD — county provides 3,132 GDD Excellent fit

Ground Cherry Planting Timeline โ€” Roosevelt County, NM

Ground Cherry Planting Calendar

Activity When Date Range
Transplant Outdoors May 9 May 9 โ€“ May 23
Harvest July 18 Jul 18 โ€“ Sep 12

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
June โ€”
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"/week ยท 2-3 times/week

๐Ÿ“… Days to Maturity

65โ€“80 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 7a

๐Ÿ“† Growing Season

187 days in Roosevelt County

Growing Tips for Ground Cherry in Roosevelt County

Direct sow Ground Cherry outdoors after April 18 in Roosevelt County when soil has warmed and frost danger has passed.

Sandy soil in Roosevelt County dries quickly โ€” 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.

Roosevelt County receives only 18" of rain annually. Ground Cherry needs consistent moisture โ€” 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 Roosevelt County, NM?

Roosevelt County is in Zone 7a with an average last frost of April 18. Plan your Ground Cherry planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Roosevelt County, NM?

Roosevelt County, New Mexico is in USDA Hardiness Zone 7a. The average last spring frost is April 18 and first fall frost is October 22.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Roosevelt County gardeners in Zone 7a 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 Roosevelt County, NM. Local conditions may vary. Last updated: April 2026.