When to Plant Carrots in Columbia County, AR
Your May game plan for Columbia County, Arkansas
Welcome to May in Zone 8b. These are the moves that will have the biggest impact on your growing season.
-
Collect carrots at their peak
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
Looking ahead to June
- First harvests: carrots
Carrots are a popular root vegetable available in orange, purple, white, and yellow varieties. They are rich in beta-carotene and have a sweet, earthy flavor.
Columbia County, Arkansas is in USDA Zone 8b. The average last spring frost is March 23 and the first fall frost is November 3, giving you a growing season of approximately 225 days.
At an elevation of 866 feet, Columbia County receives approximately 47.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94°F, providing good warmth for Carrots during the growing season.
Columbia County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-7
Drainage
Well Drained
Plant 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 Columbia County
How your county's soil matches Carrots's growing requirements.
Soil pH
Your soil pH (5.6–7.0) overlaps with Carrots's range (6.0–6.8), though not a perfect match.
Soil Texture
The silt loam soil in Columbia County is excellent for Carrots — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Carrots.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Carrots.
How to Plant Carrots
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Carrots
Sow every 6.9 weeks. Last sowing by Aug 15 to harvest before frost.
For a dedicated fall crop, sow by Aug 25.
Plant Water Budget
Monthly Watering Guide for Carrots
Carrots needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.
| Month | Carrots Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.1" | 0" | ❄️ Dormant |
| Feb | — | 3.9" | 0" | ❄️ Dormant |
| Mar | 3.5" | 4.4" | 0" | ✅ Rainfall sufficient |
| Apr | 3.5" | 4.1" | 0" | ✅ Rainfall sufficient |
| May | 3.5" | 3.8" | 0" | ✅ Rainfall sufficient |
| Jun | 3.5" | 4.3" | 0" | ✅ Rainfall sufficient |
| Jul | 3.5" | 5.4" | 0" | ✅ Rainfall sufficient |
| Aug | 3.5" | 5" | 0" | ✅ Rainfall sufficient |
| Sep | 3.5" | 3.1" | 0.4" | 💧 Light watering |
| Oct | 3.5" | 2.7" | 0.8" | 💧 Light watering |
| Nov | 3.5" | 3.4" | 0.1" | 💧 Light watering |
| Dec | — | 3.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Columbia County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Carrots 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.
Carrots Planting Timeline — Columbia County, AR
Carrots Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | March 9 | Mar 9 – Mar 30 |
| Harvest | May 11 | May 11 – Jun 15 |
| Fall Sowing | August 25 | Aug 25 – Sep 8 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Direct Sow |
| April | — |
| May | Harvest |
| June | Harvest |
| July | — |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.8"/week · Natural rainfall sufficient
📅 Days to Maturity
60–80 days
🧪 Soil pH
Needs 6–6.8 · Your soil: acceptable
🗺️ USDA Zone
Zone 8b
📆 Growing Season
225 days in Columbia County
Growing Tips for Carrots in Columbia County
Direct sow Carrots outdoors after March 23 in Columbia County when soil has warmed and frost danger has passed.
Common pests for Carrots in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
General growing tips
Sow seeds directly in loose, stone-free soil for straight roots. Keep soil moist until germination which can take 2-3 weeks. Thin seedlings to 2 inches apart.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Isolate 1/2 mile from Queen Anne's Lace (wild carrot). Biennial — requires two seasons.
Carrots in Other Locations
Frequently Asked Questions
When should I plant Carrots in Columbia County, AR?
Columbia County is in Zone 8b with an average last frost of March 23. Plan your Carrots planting based on this frost date — see the calendar above for exact timing.
What planting zone is Columbia County, AR?
Columbia County, Arkansas is in USDA Hardiness Zone 8b. The average last spring frost is March 23 and first fall frost is November 3.
Your Columbia County Garden Planner — Free
A 24-page printable planner built for Columbia County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.