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When to Plant Fennel in USDA Zone 7b

Zone 7b Zone 7b June

Your June planting checklist for Zone 7b

Each item below is timed to Zone 7b's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 6
Avg. first frost October 29
  1. Pick fennel

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

Coming up in July — start thinking about
  • First harvests: fennel
Get the full Zone 7b Garden Planner — free →

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.

In Zone 7b, the average last spring frost is around March 18 and the first fall frost is around November 8, giving you a growing season of approximately 235 days.

Zone 7b Long season
235 days
Last Spring Frost March 18
235 growing days
First Fall Frost November 8

Fennel Planting Timeline — Zone 7b

Where Is USDA Zone 7b?

The map below highlights the states that contain Zone 7b. Click any state to see the Fennel planting schedule for that location.

Prints a clean, ink-friendly version without maps or navigation.

Fennel Planting Calendar — Zone 7b

Activity When Date Range
Start Indoors January 28 Jan 28 – Feb 11
Transplant Outdoors April 1 Apr 1 – Apr 15
Direct Sow March 25 Mar 25 – Apr 15
Harvest June 3 Jun 3 – Jul 15

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

Month-by-Month Timeline

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

Free Zone 7b Planting Calendar PDF

Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 7b with start dates, transplant windows, and harvest times.

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Growing Conditions

Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

Days to Maturity

60–90 days

Soil pH

5.5 – 7

Zone Temperature Range

5°F to 10°F average annual minimum

Growing Season

235 days (Zone 7b average)

Planting Specifications

Planting Depth1 inches
Plant Spacing15 inches apart
Row Spacing24 inches between rows

Succession Planting Fennel in Zone 7b

4
successive plantings in Zone 7b's ~235-day season

Sow every 6.9 weeks for continuous harvest throughout the season.

Growing Tips for Fennel in Zone 7b

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
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Saving Fennel Seeds

Recommended for Your Garden

🌱
Seed Starting Trays $8-20

Start seeds indoors with reusable cell trays and humidity domes.

🧪
Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

🏷️
Garden Plant Markers $6-12

Keep your garden organized with durable, weather-resistant plant labels.

Related Plants

Frequently Asked Questions

When should I plant Fennel in Zone 7b?

In Zone 7b, plan your Fennel planting around the average last frost date of March 18. Start seeds indoors around January 28. Direct sow outdoors around March 25. Transplant seedlings around April 1.

Can Fennel grow in Zone 7b?

Yes, Fennel can grow well in Zone 7b, hardy in USDA zones 4a through 10b. Zone 7b has a growing season of approximately 235 days, which is sufficient for Fennel (60-90 days to maturity).

When can I harvest Fennel in Zone 7b?

In Zone 7b, expect to harvest Fennel from June 3 – July 15. Fennel takes 60-90 days from planting to harvest.

What is the last frost date for Zone 7b?

The average last spring frost in Zone 7b is around March 18, and the first fall frost is around November 8. This gives a growing season of approximately 235 days. These are 50% probability dates — actual frost dates vary year to year.

What should I plant next to Fennel?

Good companion plants for Fennel include Peas, Lettuce. These companions can help with pest control, pollination, and nutrient sharing.

🌱

Your Zone 7b Garden Planner — Free

A 22-page printable planner tailored to Zone 7b. Planting dates, monthly task lists, harvest log, seed inventory, and succession charts — everything you need to plan a full season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Planting dates are estimates based on average frost dates — 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.