When to plant Horehound in Santa Barbara County County,
Plant Horehound in Santa Barbara County County, between March 7 and March 21 — the only viable window. Zone 10a's short season (270 frost-free days) rules out a fall crop.
When to Plant Horehound in Santa Barbara County, CA
June to-do list for Santa Barbara County, California
Each item below is timed to Santa Barbara County, California's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Collect horehound at their peak
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
July will be here before you know it — start on
- First harvests: horehound
Horehound is a woolly, drought-tolerant perennial herb traditionally used for cough remedies and candy. It has a distinctive bitter, menthol-like flavor.
Santa Barbara County, California is in USDA Zone 10a. The average last spring frost is February 28 and the first fall frost is November 24, giving you a growing season of approximately 269 days.
At an elevation of 2,364 feet, Santa Barbara County receives approximately 19.9 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Horehound during the growing season. With low rainfall, drip irrigation is essential for growing Horehound successfully. Mulch heavily to conserve soil moisture.
Santa Barbara County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.2
Drainage
Well Drained
Horehound Planting Risk Windows
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 Santa Barbara County
How your county's soil matches Horehound's growing requirements.
Soil pH
Your soil pH (6.5–7.2) is within Horehound's preferred range (6.0–8.0).
Soil Texture
The loam soil in Santa Barbara County is excellent for Horehound — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.8%). Annual compost additions will help Horehound.
How to Plant Horehound
Succession Planting Horehound
Sow every 8.6 weeks. Last sowing by Aug 26 to harvest before frost.
Horehound Water Budget
Water stress score is 10/10 — 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 | — | 4" | 0" | ❄️ Dormant |
| Feb | 2.2" | 4.6" | 0" | ✅ Rainfall sufficient |
| Mar | 2.2" | 2.9" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 1.8" | 0.4" | 💧 Light watering |
| May | 2.2" | 0.5" | 1.7" | 🚿 Regular watering |
| Jun | 2.2" | 0.1" | 2.1" | 🚿 Regular watering |
| Jul | 2.2" | 0" | 2.2" | 🚿 Regular watering |
| Aug | 2.2" | 0" | 2.2" | 🚿 Regular watering |
| Sep | 2.2" | 0.2" | 2" | 🚿 Regular watering |
| Oct | 2.2" | 0.8" | 1.4" | 🚿 Regular watering |
| Nov | 2.2" | 2.1" | 0.1" | 💧 Light watering |
| Dec | — | 2.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Feb–Nov in Santa Barbara 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 Planting Timeline — Santa Barbara County, CA
Horehound Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | March 7 | Mar 7 – Mar 21 |
| Harvest | May 23 | May 23 – Jul 18 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Transplant Outdoors |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
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 10a
📆 Growing Season
269 days in Santa Barbara County
Growing Tips for Horehound in Santa Barbara County
Direct sow Horehound outdoors after February 28 in Santa Barbara County when soil has warmed and frost danger has passed.
Santa Barbara County receives only 20" 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 →
Horehound in Other Locations
Frequently Asked Questions
When should I plant Horehound in Santa Barbara County, CA?
Santa Barbara County is in Zone 10a with an average last frost of February 28. Plan your Horehound planting based on this frost date — see the calendar above for exact timing.
What planting zone is Santa Barbara County, CA?
Santa Barbara County, California is in USDA Hardiness Zone 10a. The average last spring frost is February 28 and first fall frost is November 24.
When should I plant Horehound in Santa Barbara County County, ?
In Santa Barbara County County, , plant Horehound after the last frost (around February 28) and before the first frost (around November 24). Best results when soil holds above 50°F.
What growing zone is Santa Barbara County County, for Horehound?
Santa Barbara County County sits in USDA Zone 10a. Horehound grows reliably in zones 3a through 10b, so it's a good fit here.
Can Horehound grow in Santa Barbara County County's climate?
Yes — Horehound grows well in Santa Barbara County County's temperate climate. Santa Barbara County County averages a 270-day frost-free season, with last frost around February 28 and first frost around November 24.
Your Santa Barbara County Garden Planner — Free
A 22-page printable planner built for Santa Barbara County (Zone 10a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.