When to plant Celeriac in Waldo County, ME
Waldo County's spring Celeriac window runs April 24 through May 15. time plantings around the expected last-frost window for best survival. A second sowing from July 28 to August 11 extends the harvest into fall.
When to Plant Celeriac in Waldo County, ME
July to-do list for Waldo County, Maine
Your Waldo County, Maine garden is entering a new phase. Here's what's on the schedule for July and why each task matters now.
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Start your fall crops: celeriac
A row cover ready in the garage extends your harvest by weeks once the nights turn cold.
To set up a strong August, finish these tasks
- 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.
Waldo County, Maine is in USDA Zone 5b. The average last spring frost is May 8 and the first fall frost is October 6, giving you a growing season of approximately 151 days.
At an elevation of 966 feet, Waldo County receives approximately 46 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Celeriac to ensure they mature before fall.
Waldo County Soil Profile
Soil Type
Silt Loam
Soil pH
4.8-6.7
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 Waldo County
How your county's soil matches Celeriac's growing requirements.
Soil pH
Your soil pH (4.8–6.7) is more acidic than Celeriac prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Waldo County is excellent for Celeriac — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.9%). Annual compost additions will help Celeriac.
How to Plant Celeriac
Fall planting: Sow 10 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 | — | 3.1" | 0" | ❄️ Dormant |
| Feb | — | 2.7" | 0" | ❄️ Dormant |
| Mar | — | 4.4" | 0" | ❄️ Dormant |
| Apr | — | 4.1" | 0" | ❄️ Dormant |
| May | 3.9" | 4.8" | 0" | ✅ Rainfall sufficient |
| Jun | 3.9" | 4.1" | 0" | ✅ Rainfall sufficient |
| Jul | 3.9" | 4.3" | 0" | ✅ Rainfall sufficient |
| Aug | 3.9" | 3.7" | 0.2" | 💧 Light watering |
| Sep | 3.9" | 3.6" | 0.3" | 💧 Light watering |
| Oct | 3.9" | 3.6" | 0.3" | 💧 Light watering |
| Nov | — | 4" | 0" | ❄️ Dormant |
| Dec | — | 3.5" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Oct in Waldo 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 — Waldo County, ME
Celeriac Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 3 | Apr 3 – Apr 17 |
| Transplant Outdoors | May 8 | May 8 – May 22 |
| Direct Sow | April 24 | Apr 24 – May 15 |
| Harvest | August 21 | Aug 21 – Sep 25 |
| Fall Sowing | July 28 | Jul 28 – Aug 11 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.9"/week · Natural rainfall sufficient
📅 Days to Maturity
100–120 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 5b
📆 Growing Season
151 days in Waldo County
Growing Tips for Celeriac in Waldo County
Direct sow Celeriac outdoors after May 08 in Waldo County when soil has warmed and frost danger has passed.
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
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Celeriac in Other Locations
Frequently Asked Questions
When should I plant Celeriac in Waldo County, ME?
Waldo County is in Zone 5b with an average last frost of May 8. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.
What planting zone is Waldo County, ME?
Waldo County, Maine is in USDA Hardiness Zone 5b. The average last spring frost is May 8 and first fall frost is October 6.
When should I plant Celeriac in Waldo County, ME?
In Waldo County, ME, plant Celeriac after the last frost (around May 8) and before the first frost (around October 6). Best results when soil holds above 50°F.
What growing zone is Waldo County, ME for Celeriac?
Waldo County sits in USDA Zone 5b. Celeriac grows reliably in zones 3a through 9b, so it's a good fit here.
Can Celeriac grow in Waldo County's climate?
Yes — Celeriac grows well in Waldo County's temperate climate. Waldo County averages a 151-day frost-free season, with last frost around May 8 and first frost around October 6.
Your Waldo County Garden Planner — Free
A 22-page printable planner built for Waldo County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.