When to plant Endive in Sergeant Bluff, IA
Plant Endive in Sergeant Bluff after April 26; the prime window is April 12–May 3. A second sowing from July 28 to August 11 extends the harvest into fall.
When to Plant Endive in Sergeant Bluff, IA
Woodbury County, Iowa gardeners: here's your July plan
Your Woodbury County, Iowa 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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Harvest endive as they ripen
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
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Sow endive for an autumn harvest
A row cover ready in the garage extends your harvest by weeks once the nights turn cold.
Endive is a leafy green with a slightly bitter flavor, available in curly (frisee) and broad-leaved (escarole) types. It adds texture and complexity to salads.
Sergeant Bluff, Iowa is in USDA Zone 5a. The average last spring frost is April 26 and the first fall frost is October 6, giving you a growing season of approximately 163 days.
At an elevation of 1,388 feet, Woodbury County receives approximately 40.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Endive to ensure they mature before fall.
Sergeant Bluff Soil Profile
Soil Type
Silt Loam
Soil pH
5.8-6.8
Drainage
Well Drained
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 Sergeant Bluff
How your county's soil matches Endive's growing requirements.
Soil pH
Your soil pH (5.8–6.8) is within Endive's preferred range (5.5–7.0).
Soil Texture
The silt loam soil in Woodbury County is excellent for Endive — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Endive.
Organic Matter
Organic matter is excellent (4.1%) — Endive will thrive.
How to Plant Endive
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Endive
Sow every 5.1 weeks. Last sowing by Aug 02 to harvest before frost.
For a dedicated fall crop, sow by Jul 28.
Endive Water Budget
Monthly Watering Guide for Endive
Endive needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Endive Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.5" | 0" | ❄️ Dormant |
| Feb | — | 1.9" | 0" | ❄️ Dormant |
| Mar | — | 2.8" | 0" | ❄️ Dormant |
| Apr | 3" | 3.5" | 0" | ✅ Rainfall sufficient |
| May | 3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 5.5" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 3.3" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 3.4" | 0" | ✅ Rainfall sufficient |
| Nov | — | 2.5" | 0" | ❄️ Dormant |
| Dec | — | 2.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Woodbury County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
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.
Endive Planting Timeline — Sergeant Bluff, IA
Endive Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 22 | Mar 22 – Apr 5 |
| Transplant Outdoors | April 26 | Apr 26 – May 10 |
| Direct Sow | April 12 | Apr 12 – May 3 |
| Harvest | June 14 | Jun 14 – Jul 19 |
| 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 Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Fall Sowing Harvest |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
45–65 days
🧪 Soil pH
Needs 5.5–7 · Your soil: ideal
🗺️ USDA Zone
Zone 5a
📆 Growing Season
163 days in Woodbury County
Growing Tips for Endive in Sergeant Bluff
Direct sow Endive outdoors after April 26 in Woodbury County when soil has warmed and frost danger has passed.
Your generous 163.0-day season in Woodbury County allows multiple plantings of Endive. Sow every 22.0 days for continuous harvest.
Common pests for Endive in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Sow seeds directly in spring or fall. Blanch heads by tying outer leaves together 2-3 weeks before harvest to reduce bitterness. Keep soil evenly moist.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Endive in Other Locations
When should I plant Endive in Sergeant Bluff, IA?
In Sergeant Bluff, IA, plant Endive after the last frost (around April 26) and before the first frost (around October 6). Best results when soil holds above 50°F.
What growing zone is Sergeant Bluff, IA for Endive?
Sergeant Bluff sits in USDA Zone 5a. Endive grows reliably in zones 3a through 10b, so it's a good fit here.
Can Endive grow in Sergeant Bluff's climate?
Yes — Endive grows well in Sergeant Bluff's temperate climate. Sergeant Bluff averages a 163-day frost-free season, with last frost around April 26 and first frost around October 6.
Your Woodbury County Garden Planner — Free
A 22-page printable planner built for Woodbury County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.