When to plant Belgian Endive in Larimer County, CO
Plant Belgian Endive in Larimer County from April 18 to May 9 in spring. Larimer County sits in USDA Zone 5b, with last frost around May 2 and first frost on October 6. A second sowing from July 28 to August 11 extends the harvest into fall.
When to Plant Belgian Endive in Larimer County, CO
June to-do list for Larimer County, Colorado
Here's what deserves your attention in Larimer County, Colorado this month. Everything below is tailored to Zone 5b and timed around your local frost dates.
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.
Larimer County, Colorado is in USDA Zone 5b. The average last spring frost is May 2 and the first fall frost is October 6, giving you a growing season of approximately 157 days.
At an elevation of 7,108 feet, Larimer County receives approximately 23.4 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Belgian Endive to ensure they mature before fall.
Larimer County Soil Profile
Soil Type
Loam
Soil pH
6.4-8.2
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 Larimer County
How your county's soil matches Belgian Endive's growing requirements.
Soil pH
Your soil pH (6.4–8.2) 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 Larimer County is excellent for Belgian Endive — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Belgian Endive.
Organic Matter
Organic matter is moderate (2.3%). 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 | — | 1.7" | 0" | ❄️ Dormant |
| Feb | — | 1.3" | 0" | ❄️ Dormant |
| Mar | — | 2.1" | 0" | ❄️ Dormant |
| Apr | — | 2.2" | 0" | ❄️ Dormant |
| May | 4.3" | 2.5" | 1.8" | 💧 Light watering |
| Jun | 4.3" | 1.9" | 2.4" | 🚿 Regular watering |
| Jul | 4.3" | 2.3" | 2" | 💧 Light watering |
| Aug | 4.3" | 2.5" | 1.8" | 💧 Light watering |
| Sep | 4.3" | 2" | 2.3" | 🚿 Regular watering |
| Oct | 4.3" | 1.9" | 2.4" | 🚿 Regular watering |
| Nov | — | 1.7" | 0" | ❄️ Dormant |
| Dec | — | 1.3" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Oct in Larimer 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 — Larimer County, CO
Belgian Endive Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 28 | Mar 28 – Apr 11 |
| Transplant Outdoors | May 2 | May 2 – May 16 |
| Direct Sow | April 18 | Apr 18 – May 9 |
| Harvest | August 22 | Aug 22 – Oct 17 |
| Fall Sowing | July 28 | Jul 28 – Aug 11 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · 2-3 times/week
📅 Days to Maturity
110–150 days
🧪 Soil pH
Needs 5.5–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 5b
📆 Growing Season
157 days in Larimer County
Growing Tips for Belgian Endive in Larimer County
Direct sow Belgian Endive outdoors after May 02 in Larimer County when soil has warmed and frost danger has passed.
Your 157.0-day growing season in Larimer 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.
Larimer County receives only 23" 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
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Check more plant combinations with our Companion Planting Checker →
Belgian Endive in Other Locations
Frequently Asked Questions
When should I plant Belgian Endive in Larimer County, CO?
Larimer County is in Zone 5b with an average last frost of May 2. Plan your Belgian Endive planting based on this frost date — see the calendar above for exact timing.
What planting zone is Larimer County, CO?
Larimer County, Colorado is in USDA Hardiness Zone 5b. The average last spring frost is May 2 and first fall frost is October 6.
When should I plant Belgian Endive in Larimer County, CO?
In Larimer County, CO, plant Belgian Endive after the last frost (around May 2) and before the first frost (around October 6). Best results when soil holds above 50°F.
What growing zone is Larimer County, CO for Belgian Endive?
Larimer 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 Larimer County's climate?
Yes — Belgian Endive grows well in Larimer County's temperate climate. Larimer County averages a 157-day frost-free season, with last frost around May 2 and first frost around October 6.
Your Larimer County Garden Planner — Free
A 22-page printable planner built for Larimer 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.