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When to Plant Fennel (herb) in Newton County, MS

Newton County, Mississippi Zone 8a April

Newton County, Mississippi gardeners: here's your April plan

April is a pivotal month for Newton County, Mississippi gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 21
Avg. first frost November 6
Soil temp (4") 63°F
Watering Low
Pest pressure High
Daylight 12.8 hrs
  1. Get fennel (herb) seeds going inside

    Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.

Get ahead of May
  • First harvests: fennel (herb)

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Herb fennel is grown for its aromatic leaves, stalks, and seeds rather than a bulb. It has a strong anise flavor and its flowers attract beneficial insects.

Newton County, Mississippi is in USDA Zone 8a. The average last spring frost is March 21 and the first fall frost is November 6, giving you a growing season of approximately 230 days.

At an elevation of 236 feet, Newton County receives approximately 51.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96°F, so Fennel (herb) may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Fennel (herb), but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Fennel (herb) root diseases.

Newton County, MS (Zone 8a) Long season
230 days
Last Spring Frost March 21
230 growing days
First Fall Frost November 6

Newton County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (107 days to spare)
Start indoors: Feb 3 Transplant: Mar 3 🍅 Harvest: May 5 – Jul 14
Recommended (50%) ✓ Fits season (104 days to spare)
Start indoors: Feb 14 Transplant: Mar 14 🍅 Harvest: May 16 – Jul 25
Safe Start (90%) ✓ Fits season (102 days to spare)
Start indoors: Mar 6 Transplant: Apr 3 🍅 Harvest: Jun 5 – Aug 14

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 Newton County

How your county's soil matches Fennel (herb)'s growing requirements.

Soil pH

Your soil pH (5.4–6.3) overlaps with Fennel (herb)'s range (5.5–7.0), though not a perfect match.

Soil Texture

The clay loam soil in Newton County is excellent for Fennel (herb) — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Fennel (herb).

How to Plant Fennel (herb)

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Fennel (herb)

4
successive plantings in your 230-day season

Sow every 6.9 weeks. Last sowing by Aug 08 to harvest before frost.

For a dedicated fall crop, sow by Aug 28.

Plant 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 155 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Fennel (herb)

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

Month Fennel (herb) Needs Rainfall You Supplement Action
Jan 4" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 4.3" 5.5" 0" ✅ Rainfall sufficient
Apr 4.3" 4" 0.3" 💧 Light watering
May 4.3" 3.6" 0.7" 💧 Light watering
Jun 4.3" 3.9" 0.4" 💧 Light watering
Jul 4.3" 5" 0" ✅ Rainfall sufficient
Aug 4.3" 5.6" 0" ✅ Rainfall sufficient
Sep 4.3" 3.9" 0.4" 💧 Light watering
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 4.4" 0" ✅ Rainfall sufficient
Dec 4.2" 0" ❄️ Dormant

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

Fennel (herb) 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 (herb) needs ~1,650 GDD — county provides 5,060 GDD Excellent fit

Fennel (herb) Planting Timeline — Newton County, MS

Fennel (herb) Planting Calendar

Activity When Date Range
Start Indoors February 14 Feb 14 – Feb 28
Transplant Outdoors March 14 Mar 14 – Mar 28
Direct Sow March 7 Mar 7 – Mar 28
Harvest May 16 May 16 – Jul 25
Fall Sowing August 28 Aug 28 – Sep 11

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

230 days in Newton County

Growing Tips for Fennel (herb) in Newton County

Direct sow Fennel (herb) outdoors after March 21 in Newton County when soil has warmed and frost danger has passed.

With Newton County's clay soil (27% clay), work in 3-4 inches of compost before planting Fennel (herb). Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 96°F in Newton County, provide afternoon shade for Fennel (herb) and water deeply in the morning.

Common pests for Fennel (herb) 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 spring or fall. Unlike Florence fennel, herb fennel does not form a bulb. Harvest fronds as needed and seeds when they turn brown. Self-sows readily.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Peppers
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Fennel (herb) in Newton County, MS?

Newton County is in Zone 8a with an average last frost of March 21. Plan your Fennel (herb) planting based on this frost date — see the calendar above for exact timing.

What planting zone is Newton County, MS?

Newton County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 21 and first fall frost is November 6.

🌱

Your Newton County Garden Planner — Free

A 24-page printable planner built for Newton County (Zone 8a). 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 Newton County, MS. Local conditions may vary. Last updated: April 2026.

Sources & credits

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