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When to Plant Horehound in USDA Zone 8b

Zone 8b Zone 8b June

Your June game plan for Zone 8b

Welcome to June in Zone 8b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost March 16
Avg. first frost November 13
  1. It's harvest week for horehound

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

Looking ahead to July
  • First harvests: horehound
Get your Zone 8b-specific planner by email →

Horehound is a woolly, drought-tolerant perennial herb traditionally used for cough remedies and candy. It has a distinctive bitter, menthol-like flavor.

In Zone 8b, the average last spring frost is around February 25 and the first fall frost is around November 28, giving you a growing season of approximately 276 days.

Zone 8b Year-round
276 days
Last Spring Frost February 25
276 growing days
First Fall Frost November 28

Horehound Planting Timeline — Zone 8b

Where Is USDA Zone 8b?

The map below highlights the states that contain Zone 8b. Click any state to see the Horehound planting schedule for that location.

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

Horehound Planting Calendar — Zone 8b

Activity When Date Range
Transplant Outdoors March 4 Mar 4 – Mar 18
Harvest May 20 May 20 – Jul 15

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Free Zone 8b Planting Calendar PDF

Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 8b with start dates, transplant windows, and harvest times.

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Growing Conditions

Sun

Full Sun (6-8+ hours)

💧 Water

Low — drought tolerant

Days to Maturity

75–90 days

Soil pH

6 – 8

Zone Temperature Range

15°F to 20°F average annual minimum

Growing Season

276 days (Zone 8b average)

Planting Specifications

Planting Depth0.5 inches
Plant Spacing8 inches apart
Row Spacing12 inches between rows

Succession Planting Horehound in Zone 8b

4
successive plantings in Zone 8b's ~276-day season

Sow every 8.6 weeks for continuous harvest throughout the season.

Growing Tips for Horehound in Zone 8b

Direct sow or start from divisions. Thrives in poor, dry soil. Harvest stems just before flowering. Deadhead to prevent aggressive self-seeding. Very drought-tolerant once established.

Companion Planting

Good Companions

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Saving Horehound Seeds

Recommended for Your Garden

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Fabric Grow Bags $10-25

Breathable fabric pots that promote healthy root growth and prevent overwatering.

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Self-Watering Planters $15-40

Built-in reservoir keeps herbs and greens consistently watered with less effort.

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Seed Starting Trays $8-20

Start seeds indoors with reusable cell trays and humidity domes.

Related Plants

Frequently Asked Questions

When should I plant Horehound in Zone 8b?

In Zone 8b, plan your Horehound planting around the average last frost date of February 25. Transplant seedlings around March 4.

Can Horehound grow in Zone 8b?

Yes, Horehound can grow well in Zone 8b, hardy in USDA zones 3a through 10b. Zone 8b has a growing season of approximately 276 days, which is sufficient for Horehound (75-90 days to maturity).

When can I harvest Horehound in Zone 8b?

In Zone 8b, expect to harvest Horehound from May 20 – July 15. Horehound takes 75-90 days from planting to harvest.

What is the last frost date for Zone 8b?

The average last spring frost in Zone 8b is around February 25, and the first fall frost is around November 28. This gives a growing season of approximately 276 days. These are 50% probability dates — actual frost dates vary year to year.

What should I plant next to Horehound?

Good companion plants for Horehound include Tomatoes, Peppers. These companions can help with pest control, pollination, and nutrient sharing.

🌱

Your Zone 8b Garden Planner — Free

A 22-page printable planner tailored to Zone 8b. 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.