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When to Plant Horehound in Dickey County, ND

Dickey County, North Dakota Zone 4b May

Your May gardening checklist

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

Avg. last frost May 10
Avg. first frost September 29
Soil temp (4") 52°F
Watering High
Pest pressure Low
Daylight 14.8 hrs
  1. Move horehound into the garden

    Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.

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

Dickey County, North Dakota is in USDA Zone 4b. The average last spring frost is May 10 and the first fall frost is September 29, giving you a growing season of approximately 142 days.

At an elevation of 550 feet, Dickey County receives approximately 20.9 inches of rainfall annually with predominantly loam soil. Summer highs average 81°F, so choose short-season varieties of Horehound to ensure they mature before fall.

Dickey County, ND (Zone 4b) Short season
142 days
Last Spring Frost May 10
142 growing days
First Fall Frost September 29
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Dickey County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (4 days to spare)
Transplant: May 9 🍅 Harvest: Jul 25 – Sep 19
Recommended (50%) ✓ Fits season (2 days to spare)
Transplant: May 17 🍅 Harvest: Aug 2 – Sep 27
Safe Start (90%) ✓ Fits season (7 days to spare)
Transplant: May 26 🍅 Harvest: Aug 11 – Oct 6

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 Dickey County

How your county's soil matches Horehound's growing requirements.

Soil pH

Your soil pH (6.6–7.7) is within Horehound's preferred range (6.0–8.0).

Soil Texture

The loam soil in Dickey County is excellent for Horehound — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Horehound.

Organic Matter

Organic matter is moderate (3.5%). Annual compost additions will help Horehound.

How to Plant Horehound

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Horehound

2
successive plantings in your 142-day season

Sow every 8.6 weeks. Last sowing by Jul 01 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.6″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 48 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Horehound

Horehound needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Horehound Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 1.5" 0" ❄️ Dormant
Apr 2" 0" ❄️ Dormant
May 2.2" 2.7" 0" ✅ Rainfall sufficient
Jun 2.2" 3.1" 0" ✅ Rainfall sufficient
Jul 2.2" 3.1" 0" ✅ Rainfall sufficient
Aug 2.2" 2.7" 0" ✅ Rainfall sufficient
Sep 2.2" 2" 0.2" 💧 Light watering
Oct 1.3" 0" ❄️ Dormant
Nov 0.7" 0" ❄️ Dormant
Dec 0.5" 0" ❄️ Dormant

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

Horehound 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.

Horehound needs ~887 GDD — county provides 1,526 GDD Excellent fit

Horehound Planting Timeline — Dickey County, ND

Horehound Planting Calendar

Activity When Date Range
Transplant Outdoors May 17 May 17 – May 31
Harvest August 2 Aug 2 – Sep 27

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Only during dry spells

📅 Days to Maturity

75–90 days

🧪 Soil pH

Needs 6–8 · Your soil: ideal

🗺️ USDA Zone

Zone 4b

📆 Growing Season

142 days in Dickey County

Growing Tips for Horehound in Dickey County

Direct sow Horehound outdoors after May 10 in Dickey County when soil has warmed and frost danger has passed.

Dickey County receives only 21" of rain annually. Horehound needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Horehound in Dickey County, ND?

Dickey County is in Zone 4b with an average last frost of May 10. Plan your Horehound planting based on this frost date — see the calendar above for exact timing.

What planting zone is Dickey County, ND?

Dickey County, North Dakota is in USDA Hardiness Zone 4b. The average last spring frost is May 10 and first fall frost is September 29.

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Your Dickey County Garden Planner — Free

A 24-page printable planner built for Dickey County (Zone 4b). 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 Dickey County, ND. 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.