Blog

When to Plant Brussels Sprouts in Lincoln County, NM

Brussels sprouts are a cold-hardy brassica that produces miniature cabbage-like heads along a tall stalk. Flavor improves after a light frost.

Lincoln County, New Mexico is in USDA Zone 6b. The average last spring frost is May 7 and the first fall frost is October 9, giving you a growing season of approximately 155 days.

At an elevation of 5,466 feet, Lincoln County receives approximately 16.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 88ยฐF, providing good warmth for Brussels Sprouts during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Brussels Sprouts will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Brussels Sprouts successfully. Mulch heavily to conserve soil moisture.

Lincoln County, NM (Zone 6b) Moderate season
155 days
Last Spring Frost May 7
155 growing days
First Fall Frost October 9

Lincoln County Soil Profile

Soil Type

Sandy Loam

Soil pH

7-8.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (9 days to spare)
Start indoors: Mar 28 Transplant: May 2 🍅 Harvest: Aug 1 – Sep 26
Recommended (50%) ✓ Fits season (8 days to spare)
Start indoors: Apr 2 Transplant: May 7 🍅 Harvest: Aug 6 – Oct 1
Safe Start (90%) ✓ Fits season (14 days to spare)
Start indoors: Apr 14 Transplant: May 19 🍅 Harvest: Aug 18 – Oct 13

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 Lincoln County

How your county's soil matches Brussels Sprouts's growing requirements.

Soil pH

Your soil pH (7.0โ€“8.7) is more alkaline than Brussels Sprouts prefers (6.0โ€“7.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting Brussels Sprouts.

How to Plant Brussels Sprouts

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

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

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.4″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 759 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Brussels Sprouts

Brussels Sprouts needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Brussels Sprouts Needs Rainfall You Supplement Action
Jan โ€” 1.1" 0" โ„๏ธ Dormant
Feb โ€” 1" 0" โ„๏ธ Dormant
Mar โ€” 0.8" 0" โ„๏ธ Dormant
Apr โ€” 0.6" 0" โ„๏ธ Dormant
May 3.9" 0.3" 3.6" ๐Ÿšฟ Regular watering
Jun 3.9" 0.6" 3.3" ๐Ÿšฟ Regular watering
Jul 3.9" 2.5" 1.4" ๐Ÿ’ง Light watering
Aug 3.9" 3.7" 0.2" ๐Ÿ’ง Light watering
Sep 3.9" 2.2" 1.7" ๐Ÿ’ง Light watering
Oct 3.9" 1.5" 2.4" ๐Ÿšฟ Regular watering
Nov โ€” 0.8" 0" โ„๏ธ Dormant
Dec โ€” 1.1" 0" โ„๏ธ Dormant

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

Brussels Sprouts 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.

Brussels Sprouts needs ~1,760 GDD — county provides 2,480 GDD Excellent fit

Brussels Sprouts Planting Timeline โ€” Lincoln County, NM

Brussels Sprouts Planting Calendar

Activity When Date Range
Start Indoors April 2 Apr 2 โ€“ Apr 16
Transplant Outdoors May 7 May 7 โ€“ May 21
Direct Sow April 23 Apr 23 โ€“ May 14
Harvest August 6 Aug 6 โ€“ Oct 1
Fall Sowing July 31 Jul 31 โ€“ Aug 14

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.9"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

90โ€“130 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 6b

๐Ÿ“† Growing Season

155 days in Lincoln County

Growing Tips for Brussels Sprouts in Lincoln County

Direct sow Brussels Sprouts outdoors after May 07 in Lincoln County when soil has warmed and frost danger has passed.

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

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

Lincoln County receives only 16" of rain annually. Brussels Sprouts needs consistent moisture โ€” install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 12-14 weeks before first fall frost. Stake tall plants to prevent toppling. Remove lower leaves as sprouts develop to improve air circulation.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Brussels Sprouts in Lincoln County, NM?

Lincoln County is in Zone 6b with an average last frost of May 7. Plan your Brussels Sprouts planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Lincoln County, NM?

Lincoln County, New Mexico is in USDA Hardiness Zone 6b. The average last spring frost is May 7 and first fall frost is October 9.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Lincoln County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Lincoln County, NM. Local conditions may vary. Last updated: April 2026.