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When to plant Dill in Collier County County,

In Zone 10b (Collier County County), direct-sow Dill between December 22 and January 12 for spring, after the January 1 last-frost mark. A second sowing from February 18 to March 4 extends the harvest into fall.

When to Plant Dill in Collier County, FL

Dill
Collier County, Florida Zone 10b June

What to do in June

We've pulled the most time-sensitive tasks for Collier County, Florida this June and put them front and centre. Tackle them in order.

Avg. last frost January 12
Soil temp (4") 87°F
Watering Low
Pest pressure High
Daylight 13.6 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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Dill is a feathery annual herb with aromatic leaves and seeds. Its fine foliage and umbrella-shaped flower heads attract beneficial insects to the garden.

Collier County, Florida is in USDA Zone 10b. The average last spring frost is January 12 and the first fall frost is April 15, giving you a growing season of approximately 93 days.

At an elevation of 185 feet, Collier County receives approximately 61.3 inches of rainfall annually with predominantly sand soil. Summer highs average 85°F, providing good warmth for Dill during the growing season. Sandy soil warms quickly in spring — great for early planting — but Dill will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Dill root diseases.

Collier County, FL (Zone 10b) Very short season
93 days
Last Spring Frost January 12
93 growing days
First Fall Frost April 15
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Collier County Soil Profile

Soil Type

Sand

Soil pH

5-6.2

Drainage

Well Drained

Soil Compatibility in Collier County

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

Soil pH

Your soil pH (5.0–6.2) overlaps with Dill's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Dill.

Organic Matter

Organic matter is low (1.3%). Add 2-3 inches of compost before planting Dill.

How to Plant Dill

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

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

Dill Water Budget

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

Monthly Watering Guide for Dill

Dill needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Dill Needs Rainfall You Supplement Action
Jan 2.2" 2.8" 0" ✅ Rainfall sufficient
Feb 2.2" 3.3" 0" ✅ Rainfall sufficient
Mar 2.2" 4.1" 0" ✅ Rainfall sufficient
Apr 2.2" 2.4" 0" ✅ Rainfall sufficient
May 2.2" 3.7" 0" ✅ Rainfall sufficient
Jun 2.2" 7.5" 0" ✅ Rainfall sufficient
Jul 2.2" 10" 0" ✅ Rainfall sufficient
Aug 2.2" 9" 0" ✅ Rainfall sufficient
Sep 2.2" 8.4" 0" ✅ Rainfall sufficient
Oct 2.2" 5.6" 0" ✅ Rainfall sufficient
Nov 2.3" 0" ❄️ Dormant
Dec 2.2" 0" ❄️ Dormant

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

Dill 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.

Dill needs ~688 GDD — county provides 5,018 GDD Excellent fit

Dill Planting Timeline — Collier County, FL

Dill Planting Calendar

Activity When Date Range
Start Indoors December 15 Dec 15 – Dec 29
Transplant Outdoors January 5 Jan 5 – Jan 19
Direct Sow December 22 Dec 22 – Jan 12
Harvest February 16 Feb 16 – Apr 20
Fall Sowing February 18 Feb 18 – Mar 4

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 10b

📆 Growing Season

93 days in Collier County

Growing Tips for Dill in Collier County

Direct sow Dill outdoors after January 12 in Collier County when soil has warmed and frost danger has passed.

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

Your generous 365.0-day season in Collier County allows multiple plantings of Dill. Sow every 20.0 days for continuous harvest.

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

With 61" of annual rainfall in Collier County, ensure good drainage for Dill — excess moisture can promote root rot and fungal diseases.

General growing tips

Direct sow in spring as dill has a taproot and dislikes transplanting. Succession sow for continuous leaf harvest. Allow some plants to flower for seeds and to attract beneficial insects.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Dill in Collier County, FL?

Collier County is in Zone 10b with an average last frost of January 12. Plan your Dill planting based on this frost date — see the calendar above for exact timing.

What planting zone is Collier County, FL?

Collier County, Florida is in USDA Hardiness Zone 10b. The average last spring frost is January 12 and first fall frost is .

When should I plant Dill in Collier County, ?

In Collier County, , plant Dill after the last frost (around January 1) and before the first frost (around December 31). Best results when soil holds above 50°F.

What growing zone is Collier County, for Dill?

Collier County sits in USDA Zone 10b. Dill grows reliably in zones 2a through 11b, so it's a good fit here.

Can Dill grow in Collier County's climate?

Yes — Dill grows well in Collier County's temperate climate. Collier County averages a 365-day frost-free season, with last frost around January 1 and first frost around December 31.

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Your Collier County Garden Planner — Free

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

Sources & credits

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