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When to plant Fennel in Izard County, AR

Aim to plant Fennel in Izard County on or after April 8; the window stays open through April 29. Izard County's 209-day frost-free season gives you enough for a full main crop and a short fall succession.

When to Plant Fennel in Izard County, AR

Izard County, Arkansas Zone 7b July

What to do in July

Your garden in Izard County, Arkansas is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost April 1
Avg. first frost October 27
Soil temp (4") 83°F
Watering Low
Pest pressure High
Daylight 14.2 hrs
  1. Harvest fennel as they ripen

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

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Florence fennel is grown for its swollen bulb-like stem base, which has a mild anise flavor. It is crisp raw in salads and sweet when roasted or braised.

Izard County, Arkansas is in USDA Zone 7b. The average last spring frost is April 1 and the first fall frost is October 27, giving you a growing season of approximately 209 days.

At an elevation of 281 feet, Izard County receives approximately 48.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Fennel during the growing season.

Izard County, AR (Zone 7b) Long season
209 days
Last Spring Frost April 1
209 growing days
First Fall Frost October 27

Izard County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.8

Drainage

Well Drained

Fennel Planting Risk Windows

Early Start (70% safe) ✓ Fits season (91 days to spare)
Start indoors: Feb 5 Transplant: Apr 9 🍅 Harvest: Jun 11 – Jul 23
Recommended (50%) ✓ Fits season (90 days to spare)
Start indoors: Feb 11 Transplant: Apr 15 🍅 Harvest: Jun 17 – Jul 29
Safe Start (90%) ✓ Fits season (90 days to spare)
Start indoors: Mar 1 Transplant: May 3 🍅 Harvest: Jul 5 – Aug 16

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 Izard County

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

Soil pH

Your soil pH (5.3–6.8) overlaps with Fennel's range (5.5–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Izard County is excellent for Fennel — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Fennel.

How to Plant Fennel

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Fennel

4
successive plantings in your 209-day season

Sow every 6.9 weeks. Last sowing by Jul 29 to harvest before frost.

Fennel Water Budget

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

Monthly Watering Guide for Fennel

Fennel 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 Fennel Needs Rainfall You Supplement Action
Jan 3.7" 0" ❄️ Dormant
Feb 3.4" 0" ❄️ Dormant
Mar 4.2" 0" ❄️ Dormant
Apr 2.6" 3.8" 0" ✅ Rainfall sufficient
May 2.6" 4" 0" ✅ Rainfall sufficient
Jun 2.6" 4.8" 0" ✅ Rainfall sufficient
Jul 2.6" 5.6" 0" ✅ Rainfall sufficient
Aug 2.6" 5" 0" ✅ Rainfall sufficient
Sep 2.6" 3.7" 0" ✅ Rainfall sufficient
Oct 2.6" 3.1" 0" ✅ Rainfall sufficient
Nov 3.4" 0" ❄️ Dormant
Dec 3.6" 0" ❄️ Dormant

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

Fennel 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.

Fennel needs ~1,200 GDD — county provides 3,344 GDD Excellent fit

Fennel Planting Timeline — Izard County, AR

Fennel Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 – Feb 25
Transplant Outdoors April 15 Apr 15 – Apr 29
Direct Sow April 8 Apr 8 – Apr 29
Harvest June 17 Jun 17 – Jul 29

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.6"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

209 days in Izard County

Growing Tips for Fennel in Izard County

Direct sow Fennel outdoors after April 01 in Izard County when soil has warmed and frost danger has passed.

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

General growing tips

Direct sow in late summer for fall harvest to reduce bolting. Hill soil around bulbs as they enlarge. Harvest when bulbs are tennis-ball sized before they elongate.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Peppers
  • Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Fennel in Izard County, AR?

Izard County is in Zone 7b with an average last frost of April 1. Plan your Fennel planting based on this frost date — see the calendar above for exact timing.

What planting zone is Izard County, AR?

Izard County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is April 1 and first fall frost is October 27.

When should I plant Fennel in Izard County, AR?

In Izard County, AR, plant Fennel after the last frost (around April 1) and before the first frost (around October 27). Best results when soil holds above 50°F.

What growing zone is Izard County, AR for Fennel?

Izard County sits in USDA Zone 7b. Fennel grows reliably in zones 4a through 10b, so it's a good fit here.

Can Fennel grow in Izard County's climate?

Yes — Fennel grows well in Izard County's temperate climate. Izard County averages a 209-day frost-free season, with last frost around April 1 and first frost around October 27.

🌱

Your Izard County Garden Planner — Free

A 22-page printable planner built for Izard County (Zone 7b). 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 Izard County, AR. 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.