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When to Plant Parsley in Highlands County, FL

Highlands County, Florida Zone 9b May

Your May gardening checklist

Welcome to May in Zone 9b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost January 29
Avg. first frost December 20
Soil temp (4") 78°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Collect parsley at their peak

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

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Parsley is a biennial herb available in flat-leaf (Italian) and curly varieties. It is a nutritional powerhouse rich in vitamins C and K and adds fresh flavor to countless dishes.

Highlands County, Florida is in USDA Zone 9b. The average last spring frost is January 29 and the first fall frost is December 20, giving you a growing season of approximately 325 days.

At an elevation of 111 feet, Highlands County receives approximately 57.6 inches of rainfall annually with predominantly sand soil. Summer highs average 95°F, so Parsley may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Parsley will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Parsley root diseases.

Highlands County, FL (Zone 9b) Year-round
325 days
Last Spring Frost January 29
325 growing days
First Fall Frost December 20
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Highlands County Soil Profile

Soil Type

Sand

Soil pH

4.9-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (202 days to spare)
Start indoors: Dec 25 Transplant: Jan 15 🍅 Harvest: Mar 19 – May 21
Recommended (50%) ✓ Fits season (206 days to spare)
Start indoors: Jan 1 Transplant: Jan 22 🍅 Harvest: Mar 26 – May 28
Safe Start (90%) ✓ Fits season (178 days to spare)
Start indoors: Feb 2 Transplant: Feb 23 🍅 Harvest: Apr 27 – Jun 29

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 Highlands County

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

Soil pH

Your soil pH (4.9–5.8) is more acidic than Parsley prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Parsley.

Organic Matter

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

How to Plant Parsley

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

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

Succession Planting Parsley

6
successive plantings in your 325-day season

Sow every 6.9 weeks. Last sowing by Oct 01 to harvest before frost.

For a dedicated fall crop, sow by Oct 25.

Plant Water Budget

Plant needs
0.6″/week
Rainfall provides
0.7″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 110 gal / 100 sq ft

Monthly Watering Guide for Parsley

Parsley needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.

Month Parsley Needs Rainfall You Supplement Action
Jan 2.6" 2.4" 0.2" 💧 Light watering
Feb 2.6" 3.1" 0" ✅ Rainfall sufficient
Mar 2.6" 3.6" 0" ✅ Rainfall sufficient
Apr 2.6" 2.3" 0.3" 💧 Light watering
May 2.6" 3.8" 0" ✅ Rainfall sufficient
Jun 2.6" 8.5" 0" ✅ Rainfall sufficient
Jul 2.6" 7.5" 0" ✅ Rainfall sufficient
Aug 2.6" 9.1" 0" ✅ Rainfall sufficient
Sep 2.6" 8" 0" ✅ Rainfall sufficient
Oct 2.6" 5.1" 0" ✅ Rainfall sufficient
Nov 2.6" 2.1" 0.5" 💧 Light watering
Dec 2.6" 2.3" 0.3" 💧 Light watering

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

Parsley 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.

Parsley needs ~1,488 GDD — county provides 6,927 GDD Excellent fit

Parsley Planting Timeline — Highlands County, FL

Parsley Planting Calendar

Activity When Date Range
Start Indoors January 1 Jan 1 – Jan 15
Transplant Outdoors January 22 Jan 22 – Feb 5
Direct Sow January 8 Jan 8 – Jan 29
Harvest March 26 Mar 26 – May 28
Fall Sowing October 25 Oct 25 – Nov 8

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors Transplant Outdoors Direct Sow
February Transplant Outdoors
March Harvest
April Harvest
May Harvest
June
July
August
September
October Fall Sowing
November Fall Sowing
December
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Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.6"/week · Only during dry spells

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

325 days in Highlands County

Growing Tips for Parsley in Highlands County

Direct sow Parsley outdoors after January 29 in Highlands County when soil has warmed and frost danger has passed.

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

Common pests for Parsley in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Soak seeds overnight as germination is slow. Harvest outer stems first to keep plants productive. Parsley attracts swallowtail butterflies.

Companion Planting

Good Companions

Avoid Planting Near

  • Mint
  • Lettuce

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Parsley in Highlands County, FL?

Highlands County is in Zone 9b with an average last frost of January 29. Plan your Parsley planting based on this frost date — see the calendar above for exact timing.

What planting zone is Highlands County, FL?

Highlands County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 29 and first fall frost is December 20.

🌱

Your Highlands County Garden Planner — Free

A 24-page printable planner built for Highlands County (Zone 9b). 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 Highlands County, FL. 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.