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When to plant Artichoke in Duval County, FL

Plant Artichoke in Duval County, between March 10 and March 24 — the only viable window. Zone 9b's short season (279 frost-free days) rules out a fall crop.

When to Plant Artichoke in Duval County, FL

Duval County, Florida Zone 9b August

Top priorities for Duval County, Florida gardeners in August

Your Duval County, Florida garden is entering a new phase. Here's what's on the schedule for August and why each task matters now.

Avg. last frost February 24
Avg. first frost November 29
Soil temp (4") 97°F
Watering Low
Pest pressure High
Daylight 13.1 hrs
  1. Start harvesting artichoke

    If you can't use it all right away, check the food-preservation section of your planner.

Looking ahead to September
  • First harvests: artichoke

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Globe artichokes are large thistle-like perennials prized for their edible flower buds. They produce striking silvery foliage and can be grown as ornamentals.

Duval County, Florida is in USDA Zone 9b. The average last spring frost is February 24 and the first fall frost is November 29, giving you a growing season of approximately 278 days.

At an elevation of 337 feet, Duval County receives approximately 56.9 inches of rainfall annually with predominantly sand soil. Summer highs average 102°F, so Artichoke may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Artichoke will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Artichoke root diseases.

Duval County, FL (Zone 9b) Year-round
278 days
Last Spring Frost February 24
278 growing days
First Fall Frost November 29

Duval County Soil Profile

Soil Type

Sand

Soil pH

5-5.8

Drainage

Well Drained

Artichoke Planting Risk Windows

Early Start (70% safe) ✓ Fits season (73 days to spare)
Transplant: Feb 25 🍅 Harvest: Jul 1 – Sep 9
Recommended (50%) ✓ Fits season (68 days to spare)
Transplant: Mar 10 🍅 Harvest: Jul 14 – Sep 22
Safe Start (90%) ✓ Fits season (64 days to spare)
Transplant: Apr 4 🍅 Harvest: Aug 8 – Oct 17

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 Duval County

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

Soil pH

Your soil pH (5.0–5.8) is more acidic than Artichoke prefers (6.5–8.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is low (1.4%). Add 2-3 inches of compost before planting Artichoke.

How to Plant Artichoke

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Artichoke Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 356 gal / 100 sq ft

Monthly Watering Guide for Artichoke

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

Month Artichoke Needs Rainfall You Supplement Action
Jan 2.6" 0" ❄️ Dormant
Feb 4.3" 2.8" 1.5" 💧 Light watering
Mar 4.3" 3.6" 0.7" 💧 Light watering
Apr 4.3" 3" 1.3" 💧 Light watering
May 4.3" 3.5" 0.8" 💧 Light watering
Jun 4.3" 8.7" 0" ✅ Rainfall sufficient
Jul 4.3" 7.8" 0" ✅ Rainfall sufficient
Aug 4.3" 8.9" 0" ✅ Rainfall sufficient
Sep 4.3" 6.3" 0" ✅ Rainfall sufficient
Oct 4.3" 4.7" 0" ✅ Rainfall sufficient
Nov 4.3" 2.6" 1.7" 💧 Light watering
Dec 2.4" 0" ❄️ Dormant

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

Artichoke 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.

Artichoke needs ~3,975 GDD — county provides 7,393 GDD Excellent fit

Artichoke Planting Timeline — Duval County, FL

Artichoke Planting Calendar

Activity When Date Range
Transplant Outdoors March 10 Mar 10 – Mar 24
Harvest July 14 Jul 14 – Sep 22

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

MonthActivities
January
February
March Transplant Outdoors
April
May
June
July Harvest
August Harvest
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

120–180 days

🧪 Soil pH

Needs 6.5–8 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

278 days in Duval County

Growing Tips for Artichoke in Duval County

Direct sow Artichoke outdoors after February 24 in Duval County when soil has warmed and frost danger has passed.

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

With summer highs reaching 102°F in Duval County, provide afternoon shade for Artichoke and water deeply in the morning.

Common pests for Artichoke in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 8-10 weeks before last frost. Provide consistent moisture and mulch heavily. Harvest buds before scales begin to open for best flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Artichoke in Duval County, FL?

Duval County is in Zone 9b with an average last frost of February 24. Plan your Artichoke planting based on this frost date — see the calendar above for exact timing.

What planting zone is Duval County, FL?

Duval County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is February 24 and first fall frost is November 29.

When should I plant Artichoke in Duval County, FL?

In Duval County, FL, plant Artichoke after the last frost (around February 24) and before the first frost (around November 29). Best results when soil holds above 50°F.

What growing zone is Duval County, FL for Artichoke?

Duval County sits in USDA Zone 9b. Artichoke grows reliably in zones 7a through 11b, so it's a good fit here.

Can Artichoke grow in Duval County's climate?

Yes — Artichoke grows well in Duval County's temperate climate. Duval County averages a 279-day frost-free season, with last frost around February 24 and first frost around November 29.

🌱

Your Duval County Garden Planner — Free

A 22-page printable planner built for Duval 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 Duval County, FL. Local conditions may vary. Last updated: August 2026.

Sources & credits

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