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When to plant Fennel in Ray County County,

Ray County County's climate puts the Fennel spring window between April 22 and May 13. time plantings around the expected last-frost window for best survival.

When to Plant Fennel in Ray County, MO

Ray County, Missouri Zone 6a June

What to do in June

A quick June briefing for Ray County, Missouri gardeners — what's urgent, what's next, and what can wait.

Avg. last frost April 15
Avg. first frost October 25
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 14.8 hrs
  1. Time to start fennel inside

    A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.

Looking ahead to July
  • First harvests: fennel

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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.

Ray County, Missouri is in USDA Zone 6a. The average last spring frost is April 15 and the first fall frost is October 25, giving you a growing season of approximately 193 days.

At an elevation of 747 feet, Ray County receives approximately 32.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92°F, providing good warmth for Fennel during the growing season.

Ray County, MO (Zone 6a) Moderate season
193 days
Last Spring Frost April 15
193 growing days
First Fall Frost October 25

Ray County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-6.6

Drainage

Well Drained

Fennel Planting Risk Windows

Early Start (70% safe) ✓ Fits season (74 days to spare)
Start indoors: Feb 9 Transplant: Apr 20 🍅 Harvest: Jun 22 – Aug 3
Recommended (50%) ✓ Fits season (74 days to spare)
Start indoors: Feb 18 Transplant: Apr 29 🍅 Harvest: Jul 1 – Aug 12
Safe Start (90%) ✓ Fits season (71 days to spare)
Start indoors: Mar 4 Transplant: May 13 🍅 Harvest: Jul 15 – Aug 26

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 Ray County

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

Soil pH

Your soil pH (5.6–6.6) is within Fennel's preferred range (5.5–7.0).

Soil Texture

The silt loam soil in Ray 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

3
successive plantings in your 193-day season

Sow every 6.9 weeks. Last sowing by Jul 27 to harvest before frost.

Fennel Water Budget

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

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 1.5" 0" ❄️ Dormant
Feb 1.3" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 2.6" 2.8" 0" ✅ Rainfall sufficient
May 2.6" 3.9" 0" ✅ Rainfall sufficient
Jun 2.6" 4" 0" ✅ Rainfall sufficient
Jul 2.6" 3.6" 0" ✅ Rainfall sufficient
Aug 2.6" 3.1" 0" ✅ Rainfall sufficient
Sep 2.6" 3.3" 0" ✅ Rainfall sufficient
Oct 2.6" 2.3" 0.3" 💧 Light watering
Nov 2.5" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Ray 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 ~1,425 GDD — county provides 3,667 GDD Excellent fit

Fennel Planting Timeline — Ray County, MO

Fennel Planting Calendar

Activity When Date Range
Start Indoors February 18 Feb 18 – Mar 4
Transplant Outdoors April 29 Apr 29 – May 13
Direct Sow April 22 Apr 22 – May 13
Harvest July 1 Jul 1 – Aug 12

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors
April Transplant Outdoors Direct Sow
May Transplant Outdoors Direct Sow
June
July Harvest
August Harvest
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: ideal

🗺️ USDA Zone

Zone 6a

📆 Growing Season

193 days in Ray County

Growing Tips for Fennel in Ray County

Direct sow Fennel outdoors after April 15 in Ray 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 Ray County, MO?

Ray County is in Zone 6a with an average last frost of April 15. Plan your Fennel planting based on this frost date — see the calendar above for exact timing.

What planting zone is Ray County, MO?

Ray County, Missouri is in USDA Hardiness Zone 6a. The average last spring frost is April 15 and first fall frost is October 25.

When should I plant Fennel in Ray County, ?

In Ray County, , plant Fennel after the last frost (around April 15) and before the first frost (around October 25). Best results when soil holds above 50°F.

What growing zone is Ray County, for Fennel?

Ray County sits in USDA Zone 6a. Fennel grows reliably in zones 4a through 10b, so it's a good fit here.

Can Fennel grow in Ray County's climate?

Yes — Fennel grows well in Ray County's temperate climate. Ray County averages a 193-day frost-free season, with last frost around April 15 and first frost around October 25.

🌱

Your Ray County Garden Planner — Free

A 22-page printable planner built for Ray County (Zone 6a). 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 Ray County, MO. 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.