When to plant Belgian Endive in Custer County County,
Belgian Endive planted in Custer County County between May 9 and May 30 matures in 150 days — well before the September 25 first frost. A second sowing from July 17 to July 31 extends the harvest into fall.
When to Plant Belgian Endive in Custer County, CO
June in the garden — Custer County, Colorado
Each item below is timed to Custer County, Colorado's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Indoor seed-starting week for belgian endive
Label every cell. You will absolutely forget which is which otherwise.
Get ahead of July
- Fall sowing: belgian endive
Belgian endive is produced by forcing chicory roots in darkness to create tight, pale, torpedo-shaped heads called chicons. They have a mild bitterness and elegant crunch.
Custer County, Colorado is in USDA Zone 5b. The average last spring frost is May 23 and the first fall frost is September 25, giving you a growing season of approximately 125 days.
At an elevation of 8,115 feet, Custer County receives approximately 18.1 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Belgian Endive during the growing season. With low rainfall, drip irrigation is essential for growing Belgian Endive successfully. Mulch heavily to conserve soil moisture.
Custer County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.8
Drainage
Well Drained
Belgian Endive 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 Custer County
How your county's soil matches Belgian Endive's growing requirements.
Soil pH
Your soil pH (6.5–7.8) is more alkaline than Belgian Endive prefers (5.5–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Custer County is excellent for Belgian Endive — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.5%). Annual compost additions will help Belgian Endive.
How to Plant Belgian Endive
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Belgian Endive Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Belgian Endive
Belgian Endive needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Belgian Endive Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.2" | 0" | ❄️ Dormant |
| Feb | — | 1.1" | 0" | ❄️ Dormant |
| Mar | — | 1.5" | 0" | ❄️ Dormant |
| Apr | — | 2.1" | 0" | ❄️ Dormant |
| May | 4.3" | 2.3" | 2" | 💧 Light watering |
| Jun | 4.3" | 1.2" | 3.1" | 🚿 Regular watering |
| Jul | 4.3" | 1.4" | 2.9" | 🚿 Regular watering |
| Aug | 4.3" | 2.1" | 2.2" | 🚿 Regular watering |
| Sep | 4.3" | 1.5" | 2.8" | 🚿 Regular watering |
| Oct | — | 1.5" | 0" | ❄️ Dormant |
| Nov | — | 1.1" | 0" | ❄️ Dormant |
| Dec | — | 1.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Custer County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Belgian Endive 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.
Belgian Endive Planting Timeline — Custer County, CO
Belgian Endive Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 18 | Apr 18 – May 2 |
| Transplant Outdoors | May 23 | May 23 – Jun 6 |
| Direct Sow | May 9 | May 9 – May 30 |
| Harvest | September 12 | Sep 12 – Nov 7 |
| Fall Sowing | July 17 | Jul 17 – Jul 31 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Start Indoors Transplant Outdoors Direct Sow |
| June | Transplant Outdoors |
| July | Fall Sowing |
| August | — |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · 1-2 times/week
📅 Days to Maturity
110–150 days
🧪 Soil pH
Needs 5.5–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 5b
📆 Growing Season
125 days in Custer County
Growing Tips for Belgian Endive in Custer County
Direct sow Belgian Endive outdoors after May 23 in Custer County when soil has warmed and frost danger has passed.
Your 125.0-day growing season in Custer County is tight for Belgian Endive (110.0-150.0 days to maturity). Start indoors and choose early-maturing varieties.
Common pests for Belgian Endive in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
Custer County receives only 18" of rain annually. Belgian Endive needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Grow chicory roots in the garden during summer, then dig in fall. Trim tops and force roots in moist sand in a dark cellar at 50-60F. Chicons emerge in 3-4 weeks.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Belgian Endive in Other Locations
Frequently Asked Questions
When should I plant Belgian Endive in Custer County, CO?
Custer County is in Zone 5b with an average last frost of May 23. Plan your Belgian Endive planting based on this frost date — see the calendar above for exact timing.
What planting zone is Custer County, CO?
Custer County, Colorado is in USDA Hardiness Zone 5b. The average last spring frost is May 23 and first fall frost is September 25.
When should I plant Belgian Endive in Custer County, ?
In Custer County, , plant Belgian Endive after the last frost (around May 23) and before the first frost (around September 25). Best results when soil holds above 50°F.
What growing zone is Custer County, for Belgian Endive?
Custer County sits in USDA Zone 5b. Belgian Endive grows reliably in zones 3a through 10b, so it's a good fit here.
Can Belgian Endive grow in Custer County's climate?
Yes — Belgian Endive grows well in Custer County's temperate climate. Custer County averages a 125-day frost-free season, with last frost around May 23 and first frost around September 25.
Your Custer County Garden Planner — Free
A 22-page printable planner built for Custer 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.