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When to Plant Sage in Garfield County, CO

Garfield County, Colorado Zone 6a May

Your May planting checklist for Garfield County, Colorado

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

Avg. last frost May 25
Avg. first frost September 21
Soil temp (4") 35°F
Watering High
Pest pressure Low
Daylight 14.2 hrs
June will be here before you know it — start on
  • Transplants going out: sage

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Sage is a woody perennial herb with velvety gray-green leaves and a warm, peppery flavor. It is a traditional seasoning for poultry, stuffing, and sausage.

Garfield County, Colorado is in USDA Zone 6a. The average last spring frost is May 25 and the first fall frost is September 21, giving you a growing season of approximately 119 days.

At an elevation of 7,997 feet, Garfield County receives approximately 21.3 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Sage to ensure they mature before fall.

Garfield County, CO (Zone 6a) Short season
119 days
Last Spring Frost May 25
119 growing days
First Fall Frost September 21
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Garfield County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 21 🍅 Harvest: Aug 6 – Oct 1
Recommended (50%) ✗ May not fit
Transplant: Jun 1 🍅 Harvest: Aug 17 – Oct 12
Safe Start (90%) ✗ May not fit
Transplant: Jun 21 🍅 Harvest: Sep 6 – Nov 1

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 Garfield County

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

Soil pH

Your soil pH (6.5–7.9) is more alkaline than Sage prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

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

How to Plant Sage

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Sage

Sage needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Sage Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.3" 0" ❄️ Dormant
Mar 1.6" 0" ❄️ Dormant
Apr 2.5" 0" ❄️ Dormant
May 1.3" 2.6" 0" ✅ Rainfall sufficient
Jun 1.3" 1.4" 0" ✅ Rainfall sufficient
Jul 1.3" 1.8" 0" ✅ Rainfall sufficient
Aug 1.3" 2.2" 0" ✅ Rainfall sufficient
Sep 1.3" 1.8" 0" ✅ Rainfall sufficient
Oct 1.7" 0" ❄️ Dormant
Nov 1.6" 0" ❄️ Dormant
Dec 1.2" 0" ❄️ Dormant

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

Sage 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.

Sage needs ~1,072 GDD — county provides 1,547 GDD Excellent fit

Sage Planting Timeline — Garfield County, CO

Sage Planting Calendar

Activity When Date Range
Transplant Outdoors June 1 Jun 1 – Jun 15
Harvest August 17 Aug 17 – Oct 12

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

75–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 6a

📆 Growing Season

119 days in Garfield County

Growing Tips for Sage in Garfield County

Direct sow Sage outdoors after May 25 in Garfield County when soil has warmed and frost danger has passed.

General growing tips

Start from seed or cuttings. Prune after flowering to maintain shape. Replace plants every 4-5 years when they become woody and less productive. Excellent drainage is essential.

Companion Planting

Good Companions

Avoid Planting Near

  • Cucumber
  • Rue

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sage in Garfield County, CO?

Garfield County is in Zone 6a with an average last frost of May 25. Plan your Sage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Garfield County, CO?

Garfield County, Colorado is in USDA Hardiness Zone 6a. The average last spring frost is May 25 and first fall frost is September 21.

🌱

Your Garfield County Garden Planner — Free

A 24-page printable planner built for Garfield County (Zone 6a). 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 Garfield 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.