When to plant Radish in Sacramento County County,
In Sacramento County County, plant Radish in spring between January 22 and February 12, once soil temps hold above 50°F. Sacramento County County's last frost averages February 12, so aim for a steady week of warm soil before planting. For a fall crop, sow between October 6 and October 20 — roughly 35 days before the first frost on December 1.
When to Plant Radish in Sacramento County, CA
What to do in June
Each item below is timed to Sacramento County, California's frost dates and soil temperatures. Skip nothing, stress about nothing.
Radishes are one of the fastest-growing vegetables, with some varieties ready in under a month. They come in round, elongated, and large winter types.
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 Radish during the growing season.
Sacramento County Soil Profile
Soil Type
Loam
Soil pH
6.4-7.1
Drainage
Well Drained
Radish 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 Radish's growing requirements.
Soil pH
Your soil pH (6.4–7.1) overlaps with Radish's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in Sacramento County is excellent for Radish — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.4%). Annual compost additions will help Radish.
How to Plant Radish
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Radish
Sow every 2.4 weeks. Last sowing by Oct 27 to harvest before frost.
For a dedicated fall crop, sow by Oct 06.
Radish Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Radish
Radish needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.
| Month | Radish Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 6.1" | 0" | ❄️ Dormant |
| Feb | 2.2" | 7.5" | 0" | ✅ Rainfall sufficient |
| Mar | 2.2" | 5.7" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 2.5" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 0.8" | 1.4" | 🚿 Regular watering |
| Jun | 2.2" | 0.2" | 2" | 🚿 Regular watering |
| Jul | 2.2" | 0" | 2.2" | 🚿 Regular watering |
| Aug | 2.2" | 0" | 2.2" | 🚿 Regular watering |
| Sep | 2.2" | 0.3" | 1.9" | 🚿 Regular watering |
| Oct | 2.2" | 1.4" | 0.8" | 💧 Light watering |
| Nov | 2.2" | 2.7" | 0" | ✅ Rainfall sufficient |
| Dec | 2.2" | 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.
Radish 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.
Radish Planting Timeline — Sacramento County, CA
Radish Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | January 22 | Jan 22 – Feb 12 |
| Harvest | February 19 | Feb 19 – Mar 12 |
| Fall Sowing | October 6 | Oct 6 – Oct 20 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Direct Sow |
| February | Direct Sow Harvest |
| March | Harvest |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Only during dry spells
📅 Days to Maturity
22–35 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
292 days in Sacramento County
Growing Tips for Radish in Sacramento County
Direct sow Radish outdoors after February 12 in Sacramento County when soil has warmed and frost danger has passed.
Your generous 293.0-day season in Sacramento County allows multiple plantings of Radish. Sow every 11.0 days for continuous harvest.
Common pests for Radish in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Radish in Other Locations
Frequently Asked Questions
When should I plant Radish in Sacramento County, CA?
Sacramento County is in Zone 9b with an average last frost of February 12. Plan your Radish 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.
When should I plant Radish in Sacramento County County, ?
In Sacramento County County, , plant Radish after the last frost (around February 12) and before the first frost (around December 1). Best results when soil holds above 50°F.
What growing zone is Sacramento County County, for Radish?
Sacramento County County sits in USDA Zone 9b. Radish grows reliably in zones 2a through 11b, so it's a good fit here.
Can Radish grow in Sacramento County County's climate?
Yes — Radish grows well in Sacramento County County's temperate climate. Sacramento County County averages a 293-day frost-free season, with last frost around February 12 and first frost around December 1.
Your Sacramento County Garden Planner — Free
A 22-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.