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When to Plant Fennel (herb) in Crockett County, TX

Crockett County, Texas Zone 8a May

Top priorities for Crockett County, Texas gardeners in May

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

Avg. last frost March 28
Avg. first frost November 11
Soil temp (4") 60°F
Watering Critical
Pest pressure Moderate
Daylight 13.6 hrs
  1. Start fennel (herb) under lights

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

  2. Pick fennel (herb)

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

June prep starts now
  • 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.

Crockett County, Texas is in USDA Zone 8a. The average last spring frost is March 28 and the first fall frost is November 11, giving you a growing season of approximately 228 days.

At an elevation of 3,010 feet, Crockett County receives approximately 48.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 93°F, providing good warmth for Fennel (herb) during the growing season. Sandy soil warms quickly in spring — great for early planting — but Fennel (herb) will need more frequent watering and organic matter to retain nutrients.

Crockett County, TX (Zone 8a) Long season
228 days
Last Spring Frost March 28
228 growing days
First Fall Frost November 11

Crockett County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.3-8.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (99 days to spare)
Start indoors: Feb 11 Transplant: Mar 11 🍅 Harvest: May 13 – Jul 22
Recommended (50%) ✓ Fits season (102 days to spare)
Start indoors: Feb 21 Transplant: Mar 21 🍅 Harvest: May 23 – Aug 1
Safe Start (90%) ✓ Fits season (97 days to spare)
Start indoors: Mar 10 Transplant: Apr 7 🍅 Harvest: Jun 9 – Aug 18

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 Crockett County

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

Soil pH

Your soil pH (7.3–8.3) is more alkaline than Fennel (herb) prefers (5.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Crockett County warms quickly in spring but drains fast. Fennel (herb) will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting 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 228-day season

Sow every 6.9 weeks. Last sowing by Aug 13 to harvest before frost.

For a dedicated fall crop, sow by Sep 02.

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 246 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 3.1" 0" ❄️ Dormant
Feb 2.7" 0" ❄️ Dormant
Mar 4.3" 3" 1.3" 💧 Light watering
Apr 4.3" 1.8" 2.5" 🚿 Regular watering
May 4.3" 1" 3.3" 🚿 Regular watering
Jun 4.3" 1.8" 2.5" 🚿 Regular watering
Jul 4.3" 7.2" 0" ✅ Rainfall sufficient
Aug 4.3" 10.1" 0" ✅ Rainfall sufficient
Sep 4.3" 7.6" 0" ✅ Rainfall sufficient
Oct 4.3" 4.3" 0" ✅ Rainfall sufficient
Nov 4.3" 3.2" 1.1" 💧 Light watering
Dec 3.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Crockett 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 ~1,481 GDD — county provides 4,503 GDD Excellent fit

Fennel (herb) Planting Timeline — Crockett County, TX

Fennel (herb) Planting Calendar

Activity When Date Range
Start Indoors February 21 Feb 21 – Mar 7
Transplant Outdoors March 21 Mar 21 – Apr 4
Direct Sow March 14 Mar 14 – Apr 4
Harvest May 23 May 23 – Aug 1
Fall Sowing September 2 Sep 2 – Sep 16

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 8a

📆 Growing Season

228 days in Crockett County

Growing Tips for Fennel (herb) in Crockett County

Direct sow Fennel (herb) outdoors after March 28 in Crockett County when soil has warmed and frost danger has passed.

Sandy soil in Crockett County dries quickly — mulch Fennel (herb) with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Crockett County, TX?

Crockett County is in Zone 8a with an average last frost of March 28. Plan your Fennel (herb) planting based on this frost date — see the calendar above for exact timing.

What planting zone is Crockett County, TX?

Crockett County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 28 and first fall frost is November 11.

🌱

Your Crockett County Garden Planner — Free

A 24-page printable planner built for Crockett 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 Crockett County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

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