When to Plant Parsnip in Jefferson County, MS
Jefferson County, Mississippi gardeners: here's your May plan
Each item below is timed to Jefferson County, Mississippi's frost dates and soil temperatures. Skip nothing, stress about nothing.
Coming up in June — start thinking about
- First harvests: parsnip
Parsnips are a sweet, nutty root vegetable that develops best flavor after exposure to frost. They require a long growing season but reward patient gardeners.
Jefferson County, Mississippi is in USDA Zone 8b. The average last spring frost is March 12 and the first fall frost is November 13, giving you a growing season of approximately 246 days.
At an elevation of 82 feet, Jefferson County receives approximately 55.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°F, providing good warmth for Parsnip during the growing season. Clay soil retains moisture well for Parsnip, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Parsnip root diseases.
Jefferson County Soil Profile
Soil Type
Clay Loam
Soil pH
5.8-6.5
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 Jefferson County
How your county's soil matches Parsnip's growing requirements.
Soil pH
Your soil pH (5.8–6.5) overlaps with Parsnip's range (6.0–7.0), though not a perfect match.
Soil Texture
The clay loam soil in Jefferson County is excellent for Parsnip — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Parsnip.
Organic Matter
Organic matter is moderate (2.8%). Annual compost additions will help Parsnip.
How to Plant Parsnip
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Plant Water Budget
Monthly Watering Guide for Parsnip
Parsnip needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Parsnip Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 5.1" | 0" | ❄️ Dormant |
| Feb | — | 4.4" | 0" | ❄️ Dormant |
| Mar | 4.3" | 5.9" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 6.1" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.7" | 0.6" | 💧 Light watering |
| Oct | 4.3" | 3.1" | 1.2" | 💧 Light watering |
| Nov | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Dec | — | 4.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Jefferson County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Parsnip 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.
Parsnip Planting Timeline — Jefferson County, MS
Parsnip Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | February 26 | Feb 26 – Mar 19 |
| Harvest | June 11 | Jun 11 – Jul 23 |
| Fall Sowing | September 4 | Sep 4 – Sep 18 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Direct Sow |
| March | Direct Sow |
| April | — |
| May | — |
| June | Harvest |
| July | Harvest |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Natural rainfall sufficient
📅 Days to Maturity
100–130 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 8b
📆 Growing Season
246 days in Jefferson County
Growing Tips for Parsnip in Jefferson County
Direct sow Parsnip outdoors after March 12 in Jefferson County when soil has warmed and frost danger has passed.
With Jefferson County's clay soil (30% clay), work in 3-4 inches of compost before planting Parsnip. Avoid tilling when soil is wet to prevent compaction.
Common pests for Parsnip in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
General growing tips
Use only fresh seed as parsnip seed viability declines rapidly. Sow directly in spring in deeply worked soil. Leave roots in the ground through winter for sweetest flavor.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Parsnip in Other Locations
Frequently Asked Questions
When should I plant Parsnip in Jefferson County, MS?
Jefferson County is in Zone 8b with an average last frost of March 12. Plan your Parsnip planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jefferson County, MS?
Jefferson County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 12 and first fall frost is November 13.
Your Jefferson County Garden Planner — Free
A 24-page printable planner built for Jefferson 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.