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When to Plant Fennel in Falls County, TX

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.

Falls County, Texas is in USDA Zone 8b. The average last spring frost is March 17 and the first fall frost is November 13, giving you a growing season of approximately 241 days.

At an elevation of 66 feet, Falls County receives approximately 66.1 inches of rainfall annually with predominantly clay soil. Summer highs average 97°F, so Fennel may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Fennel, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Fennel root diseases.

Falls County, TX (Zone 8b) Long season
241 days
Last Spring Frost March 17
241 growing days
First Fall Frost November 13
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Falls County Soil Profile

Soil Type

Clay

Soil pH

7.1-8.2

Drainage

Well Drained

Monthly Watering Guide for Fennel

Fennel 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 Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 4.3" 4.7" 0" ✅ Rainfall sufficient
Apr 4.3" 6.7" 0" ✅ Rainfall sufficient
May 4.3" 10" 0" ✅ Rainfall sufficient
Jun 4.3" 9.5" 0" ✅ Rainfall sufficient
Jul 4.3" 9.2" 0" ✅ Rainfall sufficient
Aug 4.3" 7.4" 0" ✅ Rainfall sufficient
Sep 4.3" 7" 0" ✅ Rainfall sufficient
Oct 4.3" 4.1" 0.2" 💧 Light watering
Nov 4.3" 2.2" 2.1" 💧 Light watering
Dec 1.6" 0" ❄️ Dormant

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

Fennel Planting Timeline — Falls County, TX

Fennel Planting Calendar

Activity When Date Range
Start Indoors January 27 Jan 27 – Feb 10
Transplant Outdoors March 31 Mar 31 – Apr 14
Direct Sow March 24 Mar 24 – Apr 14
Harvest June 2 Jun 2 – Jul 14

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 5.5–7 · Your soil: N/A

🗺️ USDA Zone

Zone 8b

📆 Growing Season

241 days in Falls County

Growing Tips for Falls County

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 Falls County, TX?

Falls County is in Zone 8b with an average last frost of March 17. Plan your Fennel planting based on this frost date — see the calendar above for exact timing.

What planting zone is Falls County, TX?

Falls County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 17 and first fall frost is November 13.

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Your Falls County Garden Planner — Free

A 22-page printable planner built for Falls County (Zone 8b). 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 Falls County, TX. 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.