When to Plant Yarrow in West Carroll Parish, LA
This month in West Carroll Parish, Louisiana
Each item below is timed to West Carroll Parish, Louisiana's frost dates and soil temperatures. Skip nothing, stress about nothing.
Looking ahead to June
- First harvests: yarrow
Yarrow is a drought-tolerant perennial herb with feathery foliage and flat-topped flower clusters in white, yellow, pink, or red. It attracts beneficial insects and is used in herbal medicine.
West Carroll Parish, Louisiana is in USDA Zone 8b. The average last spring frost is March 11 and the first fall frost is November 13, giving you a growing season of approximately 247 days.
At an elevation of 455 feet, West Carroll Parish receives approximately 60.7 inches of rainfall annually with predominantly loam soil. Summer highs average 96°F, so Yarrow may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Yarrow root diseases.
West Carroll Parish Soil Profile
Soil Type
Loam
Soil pH
6.2-7.2
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 West Carroll Parish
How your county's soil matches Yarrow's growing requirements.
Soil pH
Your soil pH (6.2–7.2) overlaps with Yarrow's range (5.5–7.0), though not a perfect match.
Soil Texture
The loam soil in West Carroll Parish is excellent for Yarrow — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.3%). Annual compost additions will help Yarrow.
How to Plant Yarrow
Plant Water Budget
Monthly Watering Guide for Yarrow
Yarrow needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.
| Month | Yarrow Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 5.6" | 0" | ❄️ Dormant |
| Feb | — | 4.2" | 0" | ❄️ Dormant |
| Mar | 2.2" | 6.5" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 4.3" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 5.4" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 5.1" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 6" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 6.3" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 4.4" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 3.9" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 4" | 0" | ✅ Rainfall sufficient |
| Dec | — | 4.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in West Carroll Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Yarrow 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.
Yarrow Planting Timeline — West Carroll Parish, LA
Yarrow Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | March 18 | Mar 18 – Apr 1 |
| Harvest | June 17 | Jun 17 – Sep 2 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Transplant Outdoors |
| April | Transplant Outdoors |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Natural rainfall sufficient
📅 Days to Maturity
90–120 days
🧪 Soil pH
Needs 5.5–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 8b
📆 Growing Season
247 days in West Carroll Parish
Growing Tips for Yarrow in West Carroll Parish
Direct sow Yarrow outdoors after March 11 in West Carroll Parish when soil has warmed and frost danger has passed.
With summer highs reaching 96°F in West Carroll Parish, provide afternoon shade for Yarrow and water deeply in the morning.
Common pests for Yarrow in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow or start from divisions. Yarrow thrives in poor soil and is very drought-tolerant. Deadhead to encourage reblooming. Divide clumps every 3 years.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Yarrow in Other Locations
Frequently Asked Questions
When should I plant Yarrow in West Carroll Parish, LA?
West Carroll Parish is in Zone 8b with an average last frost of March 11. Plan your Yarrow planting based on this frost date — see the calendar above for exact timing.
What planting zone is West Carroll Parish, LA?
West Carroll Parish, Louisiana is in USDA Hardiness Zone 8b. The average last spring frost is March 11 and first fall frost is November 13.
Your West Carroll Parish Garden Planner — Free
A 24-page printable planner built for West Carroll Parish (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.