Blog

When to plant Crosne in Clay County, FL

Spring Crosne in Clay County goes in January 28–February 18, once nighttime temps stop dipping near freezing. A second sowing from October 2 to October 16 extends the harvest into fall.

When to Plant Crosne in Clay County, FL

Clay County, Florida Zone 9a July

What to do in July

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

Avg. last frost February 18
Avg. first frost November 27
Soil temp (4") 93°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
  1. Pick crosne

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Coming up in August — start thinking about
  • First harvests: crosne

Instant PDF download. No spam, unsubscribe any time.

Crosne (Chinese artichoke) produces small, segmented white tubers with a crunchy texture and mild artichoke-nutty flavor. They are a rare delicacy in French cuisine.

Clay County, Florida is in USDA Zone 9a. The average last spring frost is February 18 and the first fall frost is November 27, giving you a growing season of approximately 282 days.

At an elevation of 122 feet, Clay County receives approximately 54.3 inches of rainfall annually with predominantly sand soil. Summer highs average 99°F, so Crosne may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Crosne will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Crosne root diseases.

Clay County, FL (Zone 9a) Year-round
282 days
Last Spring Frost February 18
282 growing days
First Fall Frost November 27

Clay County Soil Profile

Soil Type

Sand

Soil pH

5-5.8

Drainage

Well Drained

Crosne Planting Risk Windows

Early Start (70% safe) ✓ Fits season (64 days to spare)
Transplant: Feb 9 🍅 Harvest: Jul 13 – Sep 14
Recommended (50%) ✓ Fits season (65 days to spare)
Transplant: Feb 18 🍅 Harvest: Jul 22 – Sep 23
Safe Start (90%) ✓ Fits season (56 days to spare)
Transplant: Mar 22 🍅 Harvest: Aug 23 – Oct 25

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 Clay County

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

Soil pH

Your soil pH (5.0–5.8) is more acidic than Crosne prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Crosne.

Organic Matter

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

How to Plant Crosne

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Crosne Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,245 gal / 100 sq ft

Monthly Watering Guide for Crosne

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

Month Crosne Needs Rainfall You Supplement Action
Jan 2.6" 0" ❄️ Dormant
Feb 4.3" 3" 1.3" 💧 Light watering
Mar 4.3" 3.1" 1.2" 💧 Light watering
Apr 4.3" 2.5" 1.8" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 8.5" 0" ✅ Rainfall sufficient
Jul 4.3" 7.4" 0" ✅ Rainfall sufficient
Aug 4.3" 7.4" 0" ✅ Rainfall sufficient
Sep 4.3" 6.6" 0" ✅ Rainfall sufficient
Oct 4.3" 5.1" 0" ✅ Rainfall sufficient
Nov 4.3" 2.1" 2.2" 🚿 Regular watering
Dec 2.2" 0" ❄️ Dormant

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

Crosne 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.

Crosne needs ~4,244 GDD — county provides 6,862 GDD Excellent fit

Crosne Planting Timeline — Clay County, FL

Crosne Planting Calendar

Activity When Date Range
Direct Sow January 28 Jan 28 – Feb 18
Harvest July 1 Jul 1 – Sep 2
Fall Sowing October 2 Oct 2 – Oct 16

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

150–200 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

282 days in Clay County

Growing Tips for Crosne in Clay County

Direct sow Crosne outdoors after February 18 in Clay County when soil has warmed and frost danger has passed.

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

With summer highs reaching 99°F in Clay County, provide afternoon shade for Crosne and water deeply in the morning.

General growing tips

Plant tubers 3 inches deep in spring. Mark the location well as plants die back. Harvest in late fall after frost. Leave some tubers in ground for next year. Very labor-intensive to harvest.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Crosne in Clay County, FL?

Clay County is in Zone 9a with an average last frost of February 18. Plan your Crosne planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clay County, FL?

Clay County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is February 18 and first fall frost is November 27.

When should I plant Crosne in Clay County, FL?

In Clay County, FL, plant Crosne after the last frost (around February 18) and before the first frost (around November 27). Best results when soil holds above 50°F.

What growing zone is Clay County, FL for Crosne?

Clay County sits in USDA Zone 9a. Crosne grows reliably in zones 4a through 9b, so it's a good fit here.

Can Crosne grow in Clay County's climate?

Yes — Crosne grows well in Clay County's temperate climate. Clay County averages a 283-day frost-free season, with last frost around February 18 and first frost around November 27.

🌱

Your Clay County Garden Planner — Free

A 22-page printable planner built for Clay County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Clay County, FL. Local conditions may vary. Last updated: July 2026.

Sources & credits

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