Horehound Planting Guide

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

Marrubium vulgare · Herb · Lamiaceae family · 75–90 days to maturity

Get Your Personalized Horehound Planting Dates

Enter your ZIP code to see exact planting dates, soil compatibility, and growing tips specific to your county.

Where Can You Grow Horehound?

Zone Compatibility for Horehound Zones 3a – 10b

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Ideal (data available) Suitable Marginal Not recommended

Planting Dates by Zone

Zone	Start Indoors	Direct Sow	Transplant	Harvest
Zone 3a	—	—	May 22	Aug 7 – Sep 25
Zone 3b	—	—	May 17	Aug 2 – Sep 20
Zone 4a	—	—	May 13	Jul 29 – Sep 23
Zone 4b	—	—	May 8	Jul 24 – Sep 18
Zone 5a	—	—	May 2	Jul 18 – Sep 12
Zone 5b	—	—	Apr 25	Jul 11 – Sep 5
Zone 6a	—	—	Apr 17	Jul 3 – Aug 28
Zone 6b	—	—	Apr 10	Jun 26 – Aug 21
Zone 7a	—	—	Apr 1	Jun 17 – Aug 12
Zone 7b	—	—	Mar 25	Jun 10 – Aug 5
Zone 8a	—	—	Mar 15	May 31 – Jul 26
Zone 8b	—	—	Mar 4	May 20 – Jul 15
Zone 9a	—	—	Feb 17	May 5 – Jun 30
Zone 9b	—	—	Feb 1	Apr 19 – Jun 14
Zone 10a	—	—	Jan 8	Mar 26 – May 21
Zone 10b	—	—	Jan 8	Mar 26 – May 21

Why are some columns showing "—"?

Start Indoors shows "—" because Horehound is typically direct sown outdoors rather than started indoors. It germinates quickly and doesn't transplant well.

Direct Sow shows "—" because Horehound benefits from being started indoors first, then transplanted after the last frost.

How to Plant Horehound

0.5"

Planting Depth

Between Plants

12"

Between Rows

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Low — drought tolerant

Drought tolerant — water only when soil is dry 2" deep.

🧪 Soil pH

6 – 8

Prefers neutral to slightly acidic soil — ideal for most garden beds.

🗺️ Hardiness Zones

Zone 3a – 10b

📅 Days to Maturity

75–90 days

Medium-season crop. Start early for best results in shorter seasons.

👪 Plant Family

Lamiaceae

Rotate with other families yearly to prevent soil-borne diseases. Don't plant in the same spot where Lamiaceae family crops grew last year.

Succession Planting Horehound

Horehound matures in just 75–90 days, making it ideal for succession planting. In a typical 180-day growing season, you can get up to 2 successive plantings by sowing every 8.6 weeks.

Your actual succession count depends on your local frost dates. Enter your ZIP code to get personalized succession planting dates for your area.

Companion Planting for Horehound

✅ Good Companions

Tomatoes Peppers

Check more combinations with our Companion Planting Checker →

Growing Tips for Horehound

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.

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.

🏺

Self-Watering Planters $15-40

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

🌱

Seed Starting Trays $8-20

Start seeds indoors with reusable cell trays and humidity domes.

Level Up Your Garden

Seed Saving & Storage Guide

Learn when to harvest, how to dry, and how to store seeds from 200 plants. Never buy seeds again.

Learn More →

Horehound by State

Frequently Asked Questions

How long does it take to grow Horehound?

Horehound (Marrubium vulgare) takes 75 to 90 days from planting to harvest. Exact timing depends on your variety, growing conditions, and USDA zone.

What zones can Horehound grow in?

Horehound can be grown in USDA zones 3a through 10b. Use the planting calendar above to find the exact dates for your zone.

How much sun does Horehound need?

Growing Horehound requires Full Sun (6-8+ hours), Low — drought tolerant, and soil pH of 6 to 8.

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