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When to Plant Bok Choy in Harding County, NM

Bok choy is a Chinese cabbage variety with crisp white stalks and dark green leaves. It is a fast-growing cool-season crop ideal for stir-fries and soups.

Harding County, New Mexico is in USDA Zone 5b. The average last spring frost is May 2 and the first fall frost is October 8, giving you a growing season of approximately 159 days.

At an elevation of 6,903 feet, Harding County receives approximately 13 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Bok Choy to ensure they mature before fall. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Bok Choy will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Bok Choy successfully. Mulch heavily to conserve soil moisture.

Harding County, NM (Zone 5b) Moderate season
159 days
Last Spring Frost May 2
159 growing days
First Fall Frost October 8

Harding County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (81 days to spare)
Start indoors: Mar 24 Transplant: Apr 28 🍅 Harvest: Jun 9 – Jul 14
Recommended (50%) ✓ Fits season (82 days to spare)
Start indoors: Mar 28 Transplant: May 2 🍅 Harvest: Jun 13 – Jul 18
Safe Start (90%) ✓ Fits season (75 days to spare)
Start indoors: Apr 14 Transplant: May 19 🍅 Harvest: Jun 30 – Aug 4

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.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.3″/week
You supply
1.9″/week
Watering frequency 2-3 times/week
Season total 2,728 gal / 100 sq ft
Drought risk

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

Bok Choy needs ~650 GDD — county provides 2,067 GDD Excellent fit

Bok Choy Planting Timeline โ€” Harding County, NM

Bok Choy Planting Calendar

Activity When Date Range
Start Indoors March 28 Mar 28 โ€“ Apr 11
Transplant Outdoors May 2 May 2 โ€“ May 16
Direct Sow April 18 Apr 18 โ€“ May 9
Fall Sowing July 30 Jul 30 โ€“ Aug 13
Harvest June 13 Jun 13 โ€“ Jul 18

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

High โ€” keep soil consistently moist

Days to Maturity

40โ€“60 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 5b

Growing Season

159 days

Growing Tips for Harding County

Direct sow in spring or fall for best results. Keep soil consistently moist. Harvest whole heads or cut outer leaves for a cut-and-come-again approach.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Level Up Your Garden

Frequently Asked Questions

When should I plant Bok Choy in Harding County, NM?

Harding County is in Zone 5b with an average last frost of May 2. Plan your Bok Choy planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Harding County, NM?

Harding County, New Mexico is in USDA Hardiness Zone 5b. The average last spring frost is May 2 and first fall frost is October 8.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Harding County gardeners in Zone 5b organize planting dates, track what's growing, and never miss a planting window.

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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 Harding County, NM. Local conditions may vary. Last updated: April 2026.