Blog

When to Plant Sage in Butte County, CA

Butte County, California Zone 9b May

May to-do list for Butte County, California

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

Avg. last frost April 20
Avg. first frost November 10
Soil temp (4") 75°F
Watering Critical
Pest pressure High
Daylight 14.2 hrs

Instant PDF download. No spam, unsubscribe any time.

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.

Butte County, California is in USDA Zone 9b. The average last spring frost is April 20 and the first fall frost is November 10, giving you a growing season of approximately 204 days.

At an elevation of 144 feet, Butte County receives approximately 44.8 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Sage during the growing season.

Butte County, CA (Zone 9b) Long season
204 days
Last Spring Frost April 20
204 growing days
First Fall Frost November 10
Share this guide:

Butte County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (59 days to spare)
Transplant: Apr 2 🍅 Harvest: Jun 18 – Aug 13
Recommended (50%) ✓ Fits season (64 days to spare)
Transplant: Apr 27 🍅 Harvest: Jul 13 – Sep 7
Safe Start (90%) ✓ Fits season (64 days to spare)
Transplant: May 31 🍅 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 Butte County

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

Soil pH

Your soil pH (6.8–7.7) is more alkaline than Sage prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Sage.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Sage.

How to Plant Sage

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

Succession Planting Sage

3
successive plantings in your 204-day season

Sow every 8.6 weeks. Last sowing by Aug 12 to harvest before frost.

Plant Water Budget

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

Water stress score is 8/10 — 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 9.7" 0" ❄️ Dormant
Feb 9.9" 0" ❄️ Dormant
Mar 6.9" 0" ❄️ Dormant
Apr 1.3" 3" 0" ✅ Rainfall sufficient
May 1.3" 1.1" 0.2" 💧 Light watering
Jun 1.3" 0.2" 1.1" 🚿 Regular watering
Jul 1.3" 0" 1.3" 🚿 Regular watering
Aug 1.3" 0" 1.3" 🚿 Regular watering
Sep 1.3" 0.4" 0.9" 🚿 Regular watering
Oct 1.3" 2.1" 0" ✅ Rainfall sufficient
Nov 1.3" 3.7" 0" ✅ Rainfall sufficient
Dec 7.8" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Butte 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 ~1,444 GDD — county provides 3,570 GDD Excellent fit

Sage Planting Timeline — Butte County, CA

Sage Planting Calendar

Activity When Date Range
Transplant Outdoors April 27 Apr 27 – May 11
Harvest July 13 Jul 13 – Sep 7

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

Month-by-Month Timeline

MonthActivities
January
February
March
April Transplant Outdoors
May Transplant Outdoors
June
July Harvest
August Harvest
September Harvest
October
November
December
Share this guide:

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 9b

📆 Growing Season

204 days in Butte County

Growing Tips for Sage in Butte County

Direct sow Sage outdoors after April 20 in Butte 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 Butte County, CA?

Butte County is in Zone 9b with an average last frost of April 20. Plan your Sage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Butte County, CA?

Butte County, California is in USDA Hardiness Zone 9b. The average last spring frost is April 20 and first fall frost is November 10.

🌱

Your Butte County Garden Planner — Free

A 24-page printable planner built for Butte County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Butte County, CA. 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.