When to plant Celeriac in Nice, CA
Plant Celeriac in Nice, when soil hits 50°F — usually February 9. Continue planting through March 2 for the spring crop. A second sowing from October 2 to October 16 extends the harvest into fall.
When to Plant Celeriac in Nice, CA
This month in Lake County, California
Here's what deserves your attention in Lake County, California this month. Everything below is tailored to Zone 9a and timed around your local frost dates.
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Bring in the celeriac
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
Get ahead of July
- First harvests: celeriac
Celeriac is a celery relative grown for its knobby, flavorful root rather than its stalks. It has a rich celery flavor and is excellent roasted, mashed, or in soups.
Nice, California is in USDA Zone 9a. The average last spring frost is March 2 and the first fall frost is November 27, giving you a growing season of approximately 270 days.
At an elevation of 154 feet, Lake County receives approximately 30.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 83°F, so choose short-season varieties of Celeriac to ensure they mature before fall. Sandy soil warms quickly in spring — great for early planting — but Celeriac will need more frequent watering and organic matter to retain nutrients.
Nice Soil Profile
Soil Type
Sandy Loam
Soil pH
6.1-6.9
Drainage
Well Drained
Celeriac 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 Nice
How your county's soil matches Celeriac's growing requirements.
Soil pH
Your soil pH (6.1–6.9) is within Celeriac's preferred range (6.0–7.0).
Soil Texture
Sandy soil in Lake County warms quickly in spring but drains fast. Celeriac 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 Celeriac.
How to Plant Celeriac
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Celeriac Water Budget
Monthly Watering Guide for Celeriac
Celeriac 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 | Celeriac Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 6.2" | 0" | ❄️ Dormant |
| Feb | — | 6.5" | 0" | ❄️ Dormant |
| Mar | 3.9" | 4.6" | 0" | ✅ Rainfall sufficient |
| Apr | 3.9" | 2.7" | 1.2" | 💧 Light watering |
| May | 3.9" | 0.8" | 3.1" | 🚿 Regular watering |
| Jun | 3.9" | 0.2" | 3.7" | 🚿 Regular watering |
| Jul | 3.9" | 0" | 3.9" | 🚿 Regular watering |
| Aug | 3.9" | 0" | 3.9" | 🚿 Regular watering |
| Sep | 3.9" | 0.3" | 3.6" | 🚿 Regular watering |
| Oct | 3.9" | 1.1" | 2.8" | 🚿 Regular watering |
| Nov | 3.9" | 3" | 0.9" | 💧 Light watering |
| Dec | — | 5.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Lake County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Celeriac 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.
Celeriac Planting Timeline — Nice, CA
Celeriac Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 2 | Feb 2 – Feb 16 |
| Transplant Outdoors | March 2 | Mar 2 – Mar 16 |
| Direct Sow | February 9 | Feb 9 – Mar 2 |
| Harvest | June 15 | Jun 15 – Jul 20 |
| Fall Sowing | October 2 | Oct 2 – Oct 16 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | — |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.9"/week · 1-2 times/week
📅 Days to Maturity
100–120 days
🧪 Soil pH
Needs 6–7 · Your soil: ideal
🗺️ USDA Zone
Zone 9a
📆 Growing Season
270 days in Lake County
Growing Tips for Celeriac in Nice
Direct sow Celeriac outdoors after March 02 in Lake County when soil has warmed and frost danger has passed.
Sandy soil in Lake County dries quickly — mulch Celeriac with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Common pests for Celeriac in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
General growing tips
Start seeds indoors 10-12 weeks before last frost. Remove side roots as they develop to encourage a single large bulb. Harvest after a light frost for best flavor.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Celeriac in Other Locations
When should I plant Celeriac in Nice, CA?
In Nice, CA, plant Celeriac after the last frost (around March 2) and before the first frost (around November 27). Best results when soil holds above 50°F.
What growing zone is Nice, CA for Celeriac?
Nice sits in USDA Zone 9a. Celeriac grows reliably in zones 3a through 9b, so it's a good fit here.
Can Celeriac grow in Nice's climate?
Yes — Celeriac grows well in Nice's temperate climate. Nice averages a 270-day frost-free season, with last frost around March 2 and first frost around November 27.
Your Lake County Garden Planner — Free
A 22-page printable planner built for Lake County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.