When to Plant Tomatoes in Sacramento County, CA
Your May gardening checklist
Your Sacramento County, California garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.
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Collect tomatoes at their peak
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
June will be here before you know it — start on
- First harvests: tomatoes
Tomatoes are the most popular home garden crop, available in thousands of varieties from tiny cherries to massive beefsteaks. They are warm-season plants needing full sun.
Sacramento County, California is in USDA Zone 9b. The average last spring frost is February 12 and the first fall frost is December 1, giving you a growing season of approximately 292 days.
At an elevation of 263 feet, Sacramento County receives approximately 33.2 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Tomatoes during the growing season.
Sacramento County Soil Profile
Soil Type
Loam
Soil pH
6.4-7.1
Drainage
Well Drained
Plant 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 Sacramento County
How your county's soil matches Tomatoes's growing requirements.
Soil pH
Your soil pH (6.4–7.1) overlaps with Tomatoes's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in Sacramento County is excellent for Tomatoes — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.4%). Annual compost additions will help Tomatoes.
How to Plant Tomatoes
Succession Planting Tomatoes
Sow every 6.9 weeks. Last sowing by Sep 07 to harvest before frost.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Tomatoes
Tomatoes needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.
| Month | Tomatoes Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 6.1" | 0" | ❄️ Dormant |
| Feb | 5.2" | 7.5" | 0" | ✅ Rainfall sufficient |
| Mar | 5.2" | 5.7" | 0" | ✅ Rainfall sufficient |
| Apr | 5.2" | 2.5" | 2.7" | 🚿 Regular watering |
| May | 5.2" | 0.8" | 4.4" | 🚿 Regular watering |
| Jun | 5.2" | 0.2" | 5" | 🚿 Regular watering |
| Jul | 5.2" | 0" | 5.2" | 🚿 Regular watering |
| Aug | 5.2" | 0" | 5.2" | 🚿 Regular watering |
| Sep | 5.2" | 0.3" | 4.9" | 🚿 Regular watering |
| Oct | 5.2" | 1.4" | 3.8" | 🚿 Regular watering |
| Nov | 5.2" | 2.7" | 2.5" | 💧 Light watering |
| Dec | 5.2" | 5.9" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in Sacramento County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Tomatoes 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.
Tomatoes Planting Timeline — Sacramento County, CA
Tomatoes Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 1 | Jan 1 – Jan 15 |
| Transplant Outdoors | February 19 | Feb 19 – Mar 5 |
| Direct Sow | February 12 | Feb 12 – Mar 5 |
| Harvest | April 23 | Apr 23 – Jul 2 |
Plant 0.5" deep · 24" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.2"/week · 2-3 times/week
📅 Days to Maturity
60–85 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
292 days in Sacramento County
Growing Tips for Tomatoes in Sacramento County
Direct sow Tomatoes outdoors after February 12 in Sacramento County when soil has warmed and frost danger has passed.
Common pests for Tomatoes in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.
General growing tips
Start seeds indoors 6-8 weeks before last frost. Bury transplants deep to encourage rooting along the stem. Provide consistent moisture to prevent blossom end rot and cracking.
Recommended Tomatoes Varieties for Sacramento County
Your long season supports large indeterminate heirloom types
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Isolate 25 ft between varieties for purity. Use open-pollinated varieties for true-to-type seeds.
Tomatoes in Other Locations
Frequently Asked Questions
When should I plant Tomatoes in Sacramento County, CA?
Sacramento County is in Zone 9b with an average last frost of February 12. Plan your Tomatoes planting based on this frost date — see the calendar above for exact timing.
What planting zone is Sacramento County, CA?
Sacramento County, California is in USDA Hardiness Zone 9b. The average last spring frost is February 12 and first fall frost is December 1.
Your Sacramento County Garden Planner — Free
A 24-page printable planner built for Sacramento 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.