When to plant Cabbage in Smith River, CA
In Zone 9b (Smith River), direct-sow Cabbage between March 6 and March 27 for spring, after the March 27 last-frost mark. A second sowing from September 25 to October 9 extends the harvest into fall.
When to Plant Cabbage in Smith River, CA
What to do in July
We've pulled the most time-sensitive tasks for Del Norte County, California this July and put them front and centre. Tackle them in order.
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Pick cabbage
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
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.
Smith River, California is in USDA Zone 9b. The average last spring frost is March 27 and the first fall frost is November 20, giving you a growing season of approximately 238 days.
At an elevation of 72 feet, Del Norte County receives approximately 43.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 89°F, providing good warmth for Cabbage during the growing season. Sandy soil warms quickly in spring — great for early planting — but Cabbage will need more frequent watering and organic matter to retain nutrients.
Smith River Soil Profile
Soil Type
Sandy Loam
Soil pH
5.9-7
Drainage
Well Drained
Cabbage Planting Risk Windows
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 Smith River
How your county's soil matches Cabbage's growing requirements.
Soil pH
Your soil pH (5.9–7.0) overlaps with Cabbage's range (6.0–7.5), though not a perfect match.
Soil Texture
Sandy soil in Del Norte County warms quickly in spring but drains fast. Cabbage will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Cabbage.
How to Plant Cabbage
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Cabbage
Sow every 6.9 weeks. Last sowing by Aug 12 to harvest before frost.
For a dedicated fall crop, sow by Sep 25.
Cabbage Water Budget
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 | — | 8.3" | 0" | ❄️ Dormant |
| Feb | — | 9.9" | 0" | ❄️ Dormant |
| Mar | 3.9" | 5.8" | 0" | ✅ Rainfall sufficient |
| Apr | 3.9" | 3.5" | 0.4" | 💧 Light watering |
| May | 3.9" | 1.1" | 2.8" | 🚿 Regular watering |
| Jun | 3.9" | 0.3" | 3.6" | 🚿 Regular watering |
| Jul | 3.9" | 0" | 3.9" | 🚿 Regular watering |
| Aug | 3.9" | 0" | 3.9" | 🚿 Regular watering |
| Sep | 3.9" | 0.4" | 3.5" | 🚿 Regular watering |
| Oct | 3.9" | 1.9" | 2" | 🚿 Regular watering |
| Nov | 3.9" | 4.7" | 0" | ✅ Rainfall sufficient |
| Dec | — | 7.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Del Norte 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 Planting Timeline — Smith River, CA
Cabbage Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 27 | Feb 27 – Mar 13 |
| Transplant Outdoors | March 27 | Mar 27 – Apr 10 |
| Direct Sow | March 6 | Mar 6 – Mar 27 |
| Harvest | May 29 | May 29 – Jul 24 |
| Fall Sowing | September 25 | Sep 25 – Oct 9 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| 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 9b
📆 Growing Season
238 days in Del Norte County
Growing Tips for Cabbage in Smith River
Direct sow Cabbage outdoors after March 27 in Del Norte County when soil has warmed and frost danger has passed.
Sandy soil in Del Norte County dries quickly — mulch Cabbage with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Common pests for Cabbage in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
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
Check more plant combinations with our Companion Planting Checker →
Cabbage in Other Locations
When should I plant Cabbage in Smith River, CA?
In Smith River, CA, plant Cabbage after the last frost (around March 27) and before the first frost (around November 20). Best results when soil holds above 50°F.
What growing zone is Smith River, CA for Cabbage?
Smith River sits in USDA Zone 9b. Cabbage grows reliably in zones 1a through 10b, so it's a good fit here.
Can Cabbage grow in Smith River's climate?
Yes — Cabbage grows well in Smith River's temperate climate. Smith River averages a 238-day frost-free season, with last frost around March 27 and first frost around November 20.
Your Del Norte County Garden Planner — Free
A 22-page printable planner built for Del Norte 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.