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When to plant Turnip in Frostproof, FL

Plant Turnip in Frostproof, when soil hits 50°F — usually January 4. Continue planting through January 25 for the spring crop. A second sowing from October 24 to November 7 extends the harvest into fall.

When to Plant Turnip in Frostproof, FL

Polk County, Florida Zone 10a June

June to-do list for Polk County, Florida

Each item below is timed to Polk County, Florida's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost January 25
Avg. first frost December 19
Soil temp (4") 89°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
  1. Survive, don't thrive

    June-August is endurance gardening. Keep okra, peppers, sweet potatoes, and southern peas alive. Harvest everything daily before the heat damages produce on the vine.

  2. Start fall tomato seeds indoors

    Yes, indoors — under lights or in AC. They'll be ready to transplant in August when temperatures briefly moderate.

  3. Add compost to empty beds

    Empty beds get a thick layer of compost + mulch to suppress weeds and feed the soil for fall planting.

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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.

Frostproof, Florida is in USDA Zone 10a. The average last spring frost is January 25 and the first fall frost is December 19, giving you a growing season of approximately 328 days.

At an elevation of 236 feet, Polk County receives approximately 58.3 inches of rainfall annually with predominantly sand soil. Summer highs average 96°F, so Turnip may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Turnip will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Turnip root diseases.

Frostproof, FL (Zone 10a) Year-round
328 days
Last Spring Frost January 25
328 growing days
First Fall Frost December 19

Frostproof Soil Profile

Soil Type

Sand

Soil pH

4.9-6.3

Drainage

Well Drained

Turnip Planting Risk Windows

Early Start (70% safe) ✓ Fits season (248 days to spare)
Transplant: Jan 19 🍅 Harvest: Mar 2 – Apr 6
Recommended (50%) ✓ Fits season (251 days to spare)
Transplant: Jan 25 🍅 Harvest: Mar 8 – Apr 12
Safe Start (90%) ✓ Fits season (230 days to spare)
Transplant: Feb 20 🍅 Harvest: Apr 3 – May 8

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 Frostproof

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

Soil pH

Your soil pH (4.9–6.3) is more acidic than Turnip prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Turnip.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting Turnip.

How to Plant Turnip

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

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

Succession Planting Turnip

10
successive plantings in your 328-day season

Sow every 4.6 weeks. Last sowing by Oct 20 to harvest before frost.

For a dedicated fall crop, sow by Oct 24.

Turnip Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,627 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 4.3" 2.5" 1.8" 💧 Light watering
Feb 4.3" 3.1" 1.2" 💧 Light watering
Mar 4.3" 3.5" 0.8" 💧 Light watering
Apr 4.3" 2.6" 1.7" 💧 Light watering
May 4.3" 4.2" 0.1" 💧 Light watering
Jun 4.3" 9" 0" ✅ Rainfall sufficient
Jul 4.3" 9.1" 0" ✅ Rainfall sufficient
Aug 4.3" 7.9" 0" ✅ Rainfall sufficient
Sep 4.3" 6.7" 0" ✅ Rainfall sufficient
Oct 4.3" 4.8" 0" ✅ Rainfall sufficient
Nov 4.3" 2.4" 1.9" 💧 Light watering
Dec 4.3" 2.4" 1.9" 💧 Light watering

Water needs are for active growing months only (Jan–Dec in Polk 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 ~1,100 GDD — county provides 7,238 GDD Excellent fit

Turnip Planting Timeline — Frostproof, FL

Turnip Planting Calendar

Activity When Date Range
Direct Sow January 4 Jan 4 – Jan 25
Harvest February 15 Feb 15 – Mar 22
Fall Sowing October 24 Oct 24 – Nov 7

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 10a

📆 Growing Season

328 days in Polk County

Growing Tips for Turnip in Frostproof

Direct sow Turnip outdoors after January 25 in Polk County when soil has warmed and frost danger has passed.

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

With summer highs reaching 96°F in Polk County, provide afternoon shade for Turnip and water deeply in the morning.

Your generous 329.0-day season in Polk 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 →

When should I plant Turnip in Frostproof, FL?

In Frostproof, FL, plant Turnip after the last frost (around January 25) and before the first frost (around December 19). Best results when soil holds above 50°F.

What growing zone is Frostproof, FL for Turnip?

Frostproof sits in USDA Zone 10a. Turnip grows reliably in zones 2a through 10b, so it's a good fit here.

Can Turnip grow in Frostproof's climate?

Yes — Turnip grows well in Frostproof's temperate climate. Frostproof averages a 329-day frost-free season, with last frost around January 25 and first frost around December 19.

🌱

Your Polk County Garden Planner — Free

A 22-page printable planner built for Polk County (Zone 10a). 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 Polk County, FL. Local conditions may vary. Last updated: June 2026.