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When to Plant Parsnip in Glynn County, GA

Glynn County, Georgia Zone 9a May

Your May planting checklist for Glynn County, Georgia

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Glynn County, Georgia.

Avg. last frost February 9
Avg. first frost December 13
Soil temp (4") 75°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. It's harvest week for parsnip

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

Get ahead of June
  • First harvests: parsnip

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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.

Glynn County, Georgia is in USDA Zone 9a. The average last spring frost is February 9 and the first fall frost is December 13, giving you a growing season of approximately 307 days.

At an elevation of 135 feet, Glynn County receives approximately 55.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Parsnip may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Parsnip will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Parsnip root diseases.

Glynn County, GA (Zone 9a) Year-round
307 days
Last Spring Frost February 9
307 growing days
First Fall Frost December 13
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Glynn County Soil Profile

Soil Type

Sandy Loam

Soil pH

4.9-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (165 days to spare)
Transplant: Jan 27 🍅 Harvest: May 12 – Jun 23
Recommended (50%) ✓ Fits season (160 days to spare)
Transplant: Feb 9 🍅 Harvest: May 25 – Jul 6
Safe Start (90%) ✓ Fits season (144 days to spare)
Transplant: Mar 9 🍅 Harvest: Jun 22 – Aug 3

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 Glynn County

How your county's soil matches Parsnip's growing requirements.

Soil pH

Your soil pH (4.9–6.2) is more acidic than Parsnip prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Glynn County warms quickly in spring but drains fast. Parsnip will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Parsnip.

Organic Matter

Organic matter is low (1.8%). Add 2-3 inches of compost before planting Parsnip.

How to Plant Parsnip

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 4.4" 0" ❄️ Dormant
Feb 4.3" 3.9" 0.4" 💧 Light watering
Mar 4.3" 4.6" 0" ✅ Rainfall sufficient
Apr 4.3" 4.7" 0" ✅ Rainfall sufficient
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 5.5" 0" ✅ Rainfall sufficient
Jul 4.3" 5.2" 0" ✅ Rainfall sufficient
Aug 4.3" 5.8" 0" ✅ Rainfall sufficient
Sep 4.3" 4.8" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 4.2" 0.1" 💧 Light watering
Dec 4.3" 4.7" 0" ✅ Rainfall sufficient

Water needs are for active growing months only (Feb–Dec in Glynn 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 needs ~2,616 GDD — county provides 7,007 GDD Excellent fit

Parsnip Planting Timeline — Glynn County, GA

Parsnip Planting Calendar

Activity When Date Range
Direct Sow January 19 Jan 19 – Feb 9
Harvest May 4 May 4 – Jun 15
Fall Sowing October 18 Oct 18 – Nov 1

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January Direct Sow
February Direct Sow
March
April
May Harvest
June Harvest
July
August
September
October Fall Sowing
November Fall Sowing
December
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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: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

307 days in Glynn County

Growing Tips for Parsnip in Glynn County

Direct sow Parsnip outdoors after February 09 in Glynn County when soil has warmed and frost danger has passed.

Sandy soil in Glynn County dries quickly — mulch Parsnip with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 97°F in Glynn County, provide afternoon shade for Parsnip and water deeply in the morning.

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

  • Carrots
  • Celery

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Parsnip in Glynn County, GA?

Glynn County is in Zone 9a with an average last frost of February 9. Plan your Parsnip planting based on this frost date — see the calendar above for exact timing.

What planting zone is Glynn County, GA?

Glynn County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is February 9 and first fall frost is December 13.

🌱

Your Glynn County Garden Planner — Free

A 24-page printable planner built for Glynn County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Glynn County, GA. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.