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When to Plant Rosemary in Hardee County, FL

Rosemary is an aromatic evergreen shrub with needle-like leaves and a piney, citrus flavor. It is a Mediterranean herb that thrives in warm, dry conditions.

Hardee County, Florida is in USDA Zone 9b. The average last spring frost is January 27 and the first fall frost is December 20, giving you a growing season of approximately 327 days.

At an elevation of 374 feet, Hardee County receives approximately 59.8 inches of rainfall annually with predominantly sand soil. Summer highs average 102ยฐF, so Rosemary may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Rosemary will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Rosemary root diseases.

Hardee County, FL (Zone 9b) Year-round
327 days
Last Spring Frost January 27
327 growing days
First Fall Frost December 20

Hardee County Soil Profile

Soil Type

Sand

Soil pH

4.9-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (91 days to spare)
Transplant: Jan 27 🍅 Harvest: Apr 21 – Sep 8
Recommended (50%) ✓ Fits season (96 days to spare)
Transplant: Feb 3 🍅 Harvest: Apr 28 – Sep 15
Safe Start (90%) ✓ Fits season (76 days to spare)
Transplant: Feb 28 🍅 Harvest: May 23 – Oct 10

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.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Rosemary needs ~3,445 GDD — county provides 8,692 GDD Excellent fit

Rosemary Planting Timeline โ€” Hardee County, FL

Rosemary Planting Calendar

Activity When Date Range
Transplant Outdoors February 3 Feb 3 โ€“ Feb 17
Harvest April 28 Apr 28 โ€“ Sep 15

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Transplant Outdoors
March โ€”
April Harvest
May Harvest
June Harvest
July Harvest
August Harvest
September Harvest
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

80โ€“180 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 9b

Growing Season

327 days

Growing Tips for Hardee County

Grow in well-drained soil and avoid overwatering. In cold climates, grow in containers and bring indoors for winter. Propagate from stem cuttings for faster results than seed.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Rosemary in Hardee County, FL?

Hardee County is in Zone 9b with an average last frost of January 27. Plan your Rosemary planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hardee County, FL?

Hardee County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 27 and first fall frost is December 20.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Hardee County gardeners in Zone 9b organize planting dates, track what's growing, and never miss a planting window.

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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 Hardee County, FL. Local conditions may vary. Last updated: April 2026.