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When to Plant Leeks in Pasco County, FL

Leeks are a mild, sweet allium that produces long white shanks. They are more refined than onions and are a key ingredient in soups, stews, and gratins.

Pasco County, Florida is in USDA Zone 9b. The average last spring frost is January 25 and the first fall frost is December 16, giving you a growing season of approximately 325 days.

At an elevation of 321 feet, Pasco County receives approximately 59.3 inches of rainfall annually with predominantly sand soil. Summer highs average 102ยฐF, so Leeks may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Leeks will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Leeks root diseases.

Pasco County, FL (Zone 9b) Year-round
325 days
Last Spring Frost January 25
325 growing days
First Fall Frost December 16

Pasco County Soil Profile

Soil Type

Sand

Soil pH

4.9-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (157 days to spare)
Start indoors: Dec 22 Transplant: Jan 19 🍅 Harvest: Apr 20 – Jul 6
Recommended (50%) ✓ Fits season (157 days to spare)
Start indoors: Dec 28 Transplant: Jan 25 🍅 Harvest: Apr 26 – Jul 12
Safe Start (90%) ✓ Fits season (131 days to spare)
Start indoors: Jan 31 Transplant: Feb 28 🍅 Harvest: May 30 – Aug 15

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 Pasco County

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

Soil pH

Your soil pH (4.9โ€“6.1) is more acidic than Leeks prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Leeks.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Leeks.

How to Plant Leeks

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
0.8″/week
Rainfall provides
0.8″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 961 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Leeks

Leeks needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Leeks Needs Rainfall You Supplement Action
Jan 3.5" 2.5" 1" ๐Ÿ’ง Light watering
Feb 3.5" 3.1" 0.4" ๐Ÿ’ง Light watering
Mar 3.5" 3.5" 0" โœ… Rainfall sufficient
Apr 3.5" 2.9" 0.6" ๐Ÿ’ง Light watering
May 3.5" 3.8" 0" โœ… Rainfall sufficient
Jun 3.5" 8.7" 0" โœ… Rainfall sufficient
Jul 3.5" 9.5" 0" โœ… Rainfall sufficient
Aug 3.5" 7.9" 0" โœ… Rainfall sufficient
Sep 3.5" 8" 0" โœ… Rainfall sufficient
Oct 3.5" 4.9" 0" โœ… Rainfall sufficient
Nov 3.5" 2.4" 1.1" ๐Ÿ’ง Light watering
Dec 3.5" 2.1" 1.4" ๐Ÿ’ง Light watering

Water needs are for active growing months only (Janโ€“Dec in Pasco County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Leeks 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" โ€” every day above 50ยฐF 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.

Leeks needs ~3,180 GDD — county provides 8,639 GDD Excellent fit

Leeks Planting Timeline โ€” Pasco County, FL

Leeks Planting Calendar

Activity When Date Range
Start Indoors December 28 Dec 28 โ€“ Jan 11
Transplant Outdoors January 25 Jan 25 โ€“ Feb 8
Direct Sow January 4 Jan 4 โ€“ Jan 25
Harvest April 26 Apr 26 โ€“ Jul 12
Fall Sowing October 21 Oct 21 โ€“ Nov 4

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.8"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

90โ€“150 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9b

๐Ÿ“† Growing Season

325 days in Pasco County

Growing Tips for Leeks in Pasco County

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

Sandy soil in Pasco County dries quickly โ€” mulch Leeks with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 102ยฐF in Pasco County, provide afternoon shade for Leeks and water deeply in the morning.

Common pests for Leeks in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 10-12 weeks before last frost. Transplant into trenches and hill soil around stems as they grow to increase the white portion. Harvest as needed.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Leeks in Pasco County, FL?

Pasco County is in Zone 9b with an average last frost of January 25. Plan your Leeks planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Pasco County, FL?

Pasco County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 25 and first fall frost is December 16.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Pasco County gardeners in Zone 9b organize planting dates, track what's growing, and never miss a planting window.

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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 Pasco County, FL. Local conditions may vary. Last updated: April 2026.