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When to plant Hyssop in Pasco County, FL

Pasco County's 326-day season only supports one Hyssop planting per year. Sow between February 1 and February 15 for the best chance at full maturity before December 16.

When to Plant Hyssop in Pasco County, FL

Pasco County, Florida Zone 9b July

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Avg. last frost January 25
Avg. first frost December 16
Soil temp (4") 96°F
Watering Low
Pest pressure High
Daylight 13.6 hrs

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Hyssop is a semi-evergreen perennial herb with intense blue flower spikes that attract bees and butterflies. It has a minty, slightly bitter flavor used in liqueurs and teas.

Pasco County, Florida is in USDA Zone 9b. The average last spring frost is January 25 and the first fall frost is December 16, giving you a growing season of approximately 325 days.

At an elevation of 321 feet, Pasco County receives approximately 59.3 inches of rainfall annually with predominantly sand soil. Summer highs average 102°F, so Hyssop may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Hyssop will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Hyssop root diseases.

Pasco County, FL (Zone 9b) Year-round
325 days
Last Spring Frost January 25
325 growing days
First Fall Frost December 16

Pasco County Soil Profile

Soil Type

Sand

Soil pH

4.9-6.1

Drainage

Well Drained

Hyssop Planting Risk Windows

Early Start (70% safe) ✓ Fits season (185 days to spare)
Transplant: Jan 26 🍅 Harvest: Apr 6 – Jun 8
Recommended (50%) ✓ Fits season (185 days to spare)
Transplant: Feb 1 🍅 Harvest: Apr 12 – Jun 14
Safe Start (90%) ✓ Fits season (159 days to spare)
Transplant: Mar 7 🍅 Harvest: May 16 – Jul 18

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 Pasco County

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

Soil pH

Your soil pH (4.9–6.1) is more acidic than Hyssop prefers (6.0–8.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Hyssop.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Hyssop.

How to Plant Hyssop

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

Succession Planting Hyssop

5
successive plantings in your 325-day season

Sow every 8 weeks. Last sowing by Sep 17 to harvest before frost.

Hyssop Water Budget

Plant needs
0.5″/week
Rainfall provides
0.8″/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 Hyssop

Hyssop 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 Hyssop Needs Rainfall You Supplement Action
Jan 2.2" 2.5" 0" ✅ Rainfall sufficient
Feb 2.2" 3.1" 0" ✅ Rainfall sufficient
Mar 2.2" 3.5" 0" ✅ Rainfall sufficient
Apr 2.2" 2.9" 0" ✅ Rainfall sufficient
May 2.2" 3.8" 0" ✅ Rainfall sufficient
Jun 2.2" 8.7" 0" ✅ Rainfall sufficient
Jul 2.2" 9.5" 0" ✅ Rainfall sufficient
Aug 2.2" 7.9" 0" ✅ Rainfall sufficient
Sep 2.2" 8" 0" ✅ Rainfall sufficient
Oct 2.2" 4.9" 0" ✅ Rainfall sufficient
Nov 2.2" 2.4" 0" ✅ Rainfall sufficient
Dec 2.2" 2.1" 0.1" 💧 Light watering

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

Hyssop 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.

Hyssop needs ~2,120 GDD — county provides 8,639 GDD Excellent fit

Hyssop Planting Timeline — Pasco County, FL

Hyssop Planting Calendar

Activity When Date Range
Transplant Outdoors February 1 Feb 1 – Feb 15
Harvest April 12 Apr 12 – Jun 14

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–8 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

325 days in Pasco County

Growing Tips for Hyssop in Pasco County

Direct sow Hyssop outdoors after January 25 in Pasco County when soil has warmed and frost danger has passed.

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

With summer highs reaching 102°F in Pasco County, provide afternoon shade for Hyssop and water deeply in the morning.

General growing tips

Start seeds indoors or direct sow in spring. Prune back in early spring to encourage bushy growth. Hyssop is drought-tolerant once established and thrives in poor soil.

Companion Planting

Good Companions

Avoid Planting Near

  • Radish

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Hyssop in Pasco County, FL?

Pasco County is in Zone 9b with an average last frost of January 25. Plan your Hyssop planting based on this frost date — see the calendar above for exact timing.

What planting zone is Pasco County, FL?

Pasco County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 25 and first fall frost is December 16.

When should I plant Hyssop in Pasco County, FL?

In Pasco County, FL, plant Hyssop after the last frost (around January 25) and before the first frost (around December 16). Best results when soil holds above 50°F.

What growing zone is Pasco County, FL for Hyssop?

Pasco County sits in USDA Zone 9b. Hyssop grows reliably in zones 3a through 9b, so it's a good fit here.

Can Hyssop grow in Pasco County's climate?

Yes — Hyssop grows well in Pasco County's temperate climate. Pasco County averages a 326-day frost-free season, with last frost around January 25 and first frost around December 16.

🌱

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A 22-page printable planner built for Pasco 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.

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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 Pasco County, FL. Local conditions may vary. Last updated: July 2026.

Sources & credits

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