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When to Plant Turnip in Garrett County, MD

Garrett County, Maryland Zone 6a May

Your May game plan for Garrett County, Maryland

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

Avg. last frost April 28
Avg. first frost October 17
Soil temp (4") 62°F
Watering Moderate
Pest pressure Low
Daylight 14.2 hrs
  1. Pick turnip

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

June will be here before you know it — start on
  • First harvests: turnip

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Turnips are a fast-growing cool-season root vegetable with edible roots and greens. Baby turnips are sweet and tender while mature ones are more pungent.

Garrett County, Maryland is in USDA Zone 6a. The average last spring frost is April 28 and the first fall frost is October 17, giving you a growing season of approximately 172 days.

At an elevation of 21 feet, Garrett County receives approximately 41.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Turnip during the growing season.

Garrett County, MD (Zone 6a) Moderate season
172 days
Last Spring Frost April 28
172 growing days
First Fall Frost October 17

Garrett County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (93 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 4 – Jul 9
Recommended (50%) ✓ Fits season (95 days to spare)
Transplant: Apr 28 🍅 Harvest: Jun 9 – Jul 14
Safe Start (90%) ✓ Fits season (84 days to spare)
Transplant: May 22 🍅 Harvest: Jul 3 – Aug 7

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 Garrett County

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

Soil pH

Your soil pH (5.5–6.6) overlaps with Turnip's range (6.0–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Garrett County is excellent for Turnip — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Turnip.

Organic Matter

Organic matter is moderate (3.3%). Annual compost additions will help Turnip.

How to Plant Turnip

0.5"
Planting Depth
4"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Turnip

5
successive plantings in your 172-day season

Sow every 4.6 weeks. Last sowing by Aug 18 to harvest before frost.

For a dedicated fall crop, sow by Aug 08.

Plant Water Budget

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

Monthly Watering Guide for Turnip

Turnip needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Turnip Needs Rainfall You Supplement Action
Jan 3.1" 0" ❄️ Dormant
Feb 2.5" 0" ❄️ Dormant
Mar 3.7" 0" ❄️ Dormant
Apr 4.3" 4.2" 0.1" 💧 Light watering
May 4.3" 3.5" 0.8" 💧 Light watering
Jun 4.3" 3.8" 0.5" 💧 Light watering
Jul 4.3" 4.8" 0" ✅ Rainfall sufficient
Aug 4.3" 3.7" 0.6" 💧 Light watering
Sep 4.3" 3.1" 1.2" 💧 Light watering
Oct 4.3" 3" 1.3" 💧 Light watering
Nov 3.7" 0" ❄️ Dormant
Dec 2.7" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Garrett County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Turnip 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.

Turnip needs ~688 GDD — county provides 2,365 GDD Excellent fit

Turnip Planting Timeline — Garrett County, MD

Turnip Planting Calendar

Activity When Date Range
Direct Sow April 14 Apr 14 – May 5
Harvest May 26 May 26 – Jun 30
Fall Sowing August 8 Aug 8 – Aug 22

Plant 0.5" deep · 4" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6a

📆 Growing Season

172 days in Garrett County

Growing Tips for Turnip in Garrett County

Direct sow Turnip outdoors after April 28 in Garrett County when soil has warmed and frost danger has passed.

Your generous 172.0-day season in Garrett County allows multiple plantings of Turnip. Sow every 20.0 days for continuous harvest.

Common pests for Turnip in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in early spring or late summer. Harvest when roots are 2-3 inches in diameter for best flavor. Both the roots and the greens are nutritious and edible.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Turnip in Garrett County, MD?

Garrett County is in Zone 6a with an average last frost of April 28. Plan your Turnip planting based on this frost date — see the calendar above for exact timing.

What planting zone is Garrett County, MD?

Garrett County, Maryland is in USDA Hardiness Zone 6a. The average last spring frost is April 28 and first fall frost is October 17.

🌱

Your Garrett County Garden Planner — Free

A 24-page printable planner built for Garrett County (Zone 6a). 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 Garrett County, MD. Local conditions may vary. Last updated: May 2026.

Sources & credits

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