Blog

When to Plant Strawberries in Siskiyou County, CA

Siskiyou County, California Zone 8a May

Top priorities for Siskiyou County, California gardeners in May

A quick May briefing for Siskiyou County, California gardeners — what's urgent, what's next, and what can wait.

Avg. last frost May 15
Avg. first frost October 1
Soil temp (4") 67°F
Watering Critical
Pest pressure Moderate
Daylight 14.3 hrs
Get ahead of June
  • Transplants going out: strawberries

Instant PDF download. No spam, unsubscribe any time.

Strawberries are a beloved perennial fruit available as June-bearing, ever-bearing, and day-neutral types. They are one of the easiest fruits to grow in containers or garden beds.

Siskiyou County, California is in USDA Zone 8a. The average last spring frost is May 15 and the first fall frost is October 1, giving you a growing season of approximately 139 days.

At an elevation of 251 feet, Siskiyou County receives approximately 36 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 84°F, so choose short-season varieties of Strawberries to ensure they mature before fall. Sandy soil warms quickly in spring — great for early planting — but Strawberries will need more frequent watering and organic matter to retain nutrients.

Siskiyou County, CA (Zone 8a) Short season
139 days
Last Spring Frost May 15
139 growing days
First Fall Frost October 1

Siskiyou County Soil Profile

Soil Type

Sandy Loam

Soil pH

6-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (223 days to spare)
Transplant: May 27 🍅 Harvest: Aug 26 – Feb 10
Recommended (50%) ✓ Fits season (224 days to spare)
Transplant: Jun 5 🍅 Harvest: Sep 4 – Feb 19
Safe Start (90%) ✓ Fits season (213 days to spare)
Transplant: Jul 9 🍅 Harvest: Oct 8 – Mar 25

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 Siskiyou County

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

Soil pH

Your soil pH (6.0–6.9) overlaps with Strawberries's range (5.5–6.8), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Strawberries

12"
Between Plants
24"
Between Rows

How Much Strawberries to Grow

1 lb
Average yield per plant
10
Plants per person
20 sq ft
Space per person

For a family of 4, plant approximately 40 strawberries plants in about 80 sq ft. In Siskiyou County's 139-day season, you'll have plenty of time for a full harvest. Plan your garden layout →

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Strawberries

Strawberries needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Strawberries Needs Rainfall You Supplement Action
Jan 7.3" 0" ❄️ Dormant
Feb 7.1" 0" ❄️ Dormant
Mar 5.3" 0" ❄️ Dormant
Apr 3.3" 0" ❄️ Dormant
May 4.3" 1" 3.3" 🚿 Regular watering
Jun 4.3" 0.2" 4.1" 🚿 Regular watering
Jul 4.3" 0" 4.3" 🚿 Regular watering
Aug 4.3" 0" 4.3" 🚿 Regular watering
Sep 4.3" 0.4" 3.9" 🚿 Regular watering
Oct 4.3" 1.6" 2.7" 🚿 Regular watering
Nov 3.1" 0" ❄️ Dormant
Dec 6.7" 0" ❄️ Dormant

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

Strawberries 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.

Strawberries needs ~2,958 GDD — county provides 1,807 GDD May not mature

Strawberries Planting Timeline — Siskiyou County, CA

Strawberries Planting Calendar

Activity When Date Range
Transplant Outdoors June 5 Jun 5 – Jun 19
Harvest September 4 Sep 4 – Feb 19

· 12" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

90–365 days

🧪 Soil pH

Needs 5.5–6.8 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

139 days in Siskiyou County

Growing Tips for Strawberries in Siskiyou County

Direct sow Strawberries outdoors after May 15 in Siskiyou County when soil has warmed and frost danger has passed.

Sandy soil in Siskiyou County dries quickly — mulch Strawberries with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Your 139.0-day growing season in Siskiyou County is tight for Strawberries (90.0-365.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant with crowns at soil level. Remove runners the first year to strengthen plants. Mulch with straw to keep fruit clean and suppress weeds. Renovate June-bearing beds after harvest.

Recommended Strawberries Varieties for Siskiyou County

June-bearing varieties suited for northern climates

Sparkle Jewel Earliglow

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
  • Broccoli

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Strawberries in Siskiyou County, CA?

Siskiyou County is in Zone 8a with an average last frost of May 15. Plan your Strawberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Siskiyou County, CA?

Siskiyou County, California is in USDA Hardiness Zone 8a. The average last spring frost is May 15 and first fall frost is October 1.

🌱

Your Siskiyou County Garden Planner — Free

A 24-page printable planner built for Siskiyou County (Zone 8a). 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 Siskiyou 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.