Blog

When to Plant Horehound in Volusia County, FL

Volusia County, Florida Zone 9b May

This month in Volusia County, Florida

Your garden in Volusia County, Florida is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost February 3
Avg. first frost December 21
Soil temp (4") 79°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. It's harvest week for horehound

    If you can't use it all right away, check the food-preservation section of your planner.

Get ahead of June
  • First harvests: horehound

Instant PDF download. No spam, unsubscribe any time.

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

Volusia County, Florida is in USDA Zone 9b. The average last spring frost is February 3 and the first fall frost is December 21, giving you a growing season of approximately 321 days.

At an elevation of 382 feet, Volusia County receives approximately 54.8 inches of rainfall annually with predominantly sand soil. Summer highs average 95°F, so Horehound may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Horehound will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Horehound root diseases.

Volusia County, FL (Zone 9b) Year-round
321 days
Last Spring Frost February 3
321 growing days
First Fall Frost December 21
Share this guide:

Volusia County Soil Profile

Soil Type

Sand

Soil pH

5-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (192 days to spare)
Transplant: Jan 26 🍅 Harvest: Apr 13 – Jun 8
Recommended (50%) ✓ Fits season (181 days to spare)
Transplant: Feb 10 🍅 Harvest: Apr 28 – Jun 23
Safe Start (90%) ✓ Fits season (158 days to spare)
Transplant: Mar 10 🍅 Harvest: May 26 – Jul 21

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 Volusia County

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

Soil pH

Your soil pH (5.0–6.3) is more acidic than Horehound prefers (6.0–8.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Volusia County warms quickly in spring but drains fast. Horehound will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.4%). Add 2-3 inches of compost before planting Horehound.

How to Plant Horehound

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

Succession Planting Horehound

5
successive plantings in your 321-day season

Sow every 8.6 weeks. Last sowing by Sep 22 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.7″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 2.5" 0" ❄️ Dormant
Feb 2.2" 2.7" 0" ✅ Rainfall sufficient
Mar 2.2" 3" 0" ✅ Rainfall sufficient
Apr 2.2" 2.9" 0" ✅ Rainfall sufficient
May 2.2" 4" 0" ✅ Rainfall sufficient
Jun 2.2" 7.5" 0" ✅ Rainfall sufficient
Jul 2.2" 8.6" 0" ✅ Rainfall sufficient
Aug 2.2" 8.4" 0" ✅ Rainfall sufficient
Sep 2.2" 6.1" 0" ✅ Rainfall sufficient
Oct 2.2" 4.8" 0" ✅ Rainfall sufficient
Nov 2.2" 2" 0.2" 💧 Light watering
Dec 2.2" 2.3" 0" ✅ Rainfall sufficient

Water needs are for active growing months only (Feb–Dec in Volusia 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 ~1,753 GDD — county provides 6,842 GDD Excellent fit

Horehound Planting Timeline — Volusia County, FL

Horehound Planting Calendar

Activity When Date Range
Transplant Outdoors February 10 Feb 10 – Feb 24
Harvest April 28 Apr 28 – Jun 23

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

75–90 days

🧪 Soil pH

Needs 6–8 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

321 days in Volusia County

Growing Tips for Horehound in Volusia County

Direct sow Horehound outdoors after February 03 in Volusia County when soil has warmed and frost danger has passed.

Sandy soil in Volusia County dries quickly — mulch Horehound with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Volusia County, FL?

Volusia County is in Zone 9b with an average last frost of February 3. Plan your Horehound planting based on this frost date — see the calendar above for exact timing.

What planting zone is Volusia County, FL?

Volusia County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is February 3 and first fall frost is December 21.

🌱

Your Volusia County Garden Planner — Free

A 24-page printable planner built for Volusia County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Volusia County, FL. 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.