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When to Plant Cabbage in Saguache County, CO

Saguache County, Colorado Zone 5b May

What to do in May

We've pulled the most time-sensitive tasks for Saguache County, Colorado this May and put them front and centre. Tackle them in order.

Avg. last frost May 30
Avg. first frost September 20
Soil temp (4") 42°F
Watering Moderate
Pest pressure Low
Daylight 14.1 hrs
  1. Move cabbage into the garden

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

  2. Direct-sow cabbage

    Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.

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Cabbage is a versatile cool-season crop that forms dense, leafy heads in green, red, or savoy varieties. It is a staple for coleslaw, sauerkraut, and many global cuisines.

Saguache County, Colorado is in USDA Zone 5b. The average last spring frost is May 30 and the first fall frost is September 20, giving you a growing season of approximately 113 days.

At an elevation of 5,293 feet, Saguache County receives approximately 23.7 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Cabbage to ensure they mature before fall.

Saguache County, CO (Zone 5b) Short season
113 days
Last Spring Frost May 30
113 growing days
First Fall Frost September 20

Saguache County Soil Profile

Soil Type

Loam

Soil pH

6.4-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Apr 19 Transplant: May 24 🍅 Harvest: Jul 26 – Sep 20
Recommended (50%) ✗ May not fit
Start indoors: Apr 25 Transplant: May 30 🍅 Harvest: Aug 1 – Sep 26
Safe Start (90%) ✗ May not fit
Start indoors: May 10 Transplant: Jun 14 🍅 Harvest: Aug 16 – Oct 11

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 Saguache County

How your county's soil matches Cabbage's growing requirements.

Soil pH

Your soil pH (6.4–8.4) overlaps with Cabbage's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Saguache County is excellent for Cabbage — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Cabbage.

How to Plant Cabbage

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

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

Succession Planting Cabbage

2
successive plantings in your 113-day season

Sow every 6.9 weeks. Last sowing by Jun 12 to harvest before frost.

For a dedicated fall crop, sow by Jul 12.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 23 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Cabbage

Cabbage 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 Cabbage Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 1.2" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 2.4" 0" ❄️ Dormant
May 3.9" 3.1" 0.8" 💧 Light watering
Jun 3.9" 1.7" 2.2" 🚿 Regular watering
Jul 3.9" 2.1" 1.8" 💧 Light watering
Aug 3.9" 2.3" 1.6" 💧 Light watering
Sep 3.9" 2" 1.9" 💧 Light watering
Oct 2.2" 0" ❄️ Dormant
Nov 1.7" 0" ❄️ Dormant
Dec 1.6" 0" ❄️ Dormant

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

Cabbage 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.

Cabbage needs ~800 GDD — county provides 1,130 GDD Excellent fit

Cabbage Planting Timeline — Saguache County, CO

Cabbage Planting Calendar

Activity When Date Range
Start Indoors April 25 Apr 25 – May 9
Transplant Outdoors May 30 May 30 – Jun 13
Direct Sow May 16 May 16 – Jun 6
Harvest August 1 Aug 1 – Sep 26
Fall Sowing July 12 Jul 12 – Jul 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 5b

📆 Growing Season

113 days in Saguache County

Growing Tips for Cabbage in Saguache County

Direct sow Cabbage outdoors after May 30 in Saguache County when soil has warmed and frost danger has passed.

Your 113.0-day growing season in Saguache County is tight for Cabbage (60.0-100.0 days to maturity). Start indoors and choose early-maturing varieties.

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

Saguache County receives only 24" of rain annually. Cabbage needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 4-6 weeks before last frost. Space plants 18-24 inches apart. Keep soil evenly moist to prevent heads from splitting.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cabbage in Saguache County, CO?

Saguache County is in Zone 5b with an average last frost of May 30. Plan your Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Saguache County, CO?

Saguache County, Colorado is in USDA Hardiness Zone 5b. The average last spring frost is May 30 and first fall frost is September 20.

🌱

Your Saguache County Garden Planner — Free

A 24-page printable planner built for Saguache County (Zone 5b). 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 Saguache County, CO. 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.