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When to Plant Rosemary in Pearl River County, MS

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.

Pearl River County, Mississippi is in USDA Zone 8b. The average last spring frost is March 3 and the first fall frost is November 24, giving you a growing season of approximately 266 days.

At an elevation of 243 feet, Pearl River County receives approximately 56.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97Β°F, so Rosemary may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring β€” great for early planting β€” 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.

Pearl River County, MS (Zone 8b) Long season
266 days
Last Spring Frost March 3
266 growing days
First Fall Frost November 24

Pearl River County Soil Profile

Soil Type

Sandy Loam

Soil pH

4.8-6

Drainage

Well Drained

Monthly Watering Guide for Rosemary

Rosemary needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Rosemary Needs Rainfall You Supplement Action
Jan β€” 4.2" 0" ❄️ Dormant
Feb β€” 4.8" 0" ❄️ Dormant
Mar 4.3" 5.1" 0" βœ… Rainfall sufficient
Apr 4.3" 4.5" 0" βœ… Rainfall sufficient
May 4.3" 4.6" 0" βœ… Rainfall sufficient
Jun 4.3" 5.6" 0" βœ… Rainfall sufficient
Jul 4.3" 5.5" 0" βœ… Rainfall sufficient
Aug 4.3" 4.7" 0" βœ… Rainfall sufficient
Sep 4.3" 4.7" 0" βœ… Rainfall sufficient
Oct 4.3" 4.2" 0.1" πŸ’§ Light watering
Nov 4.3" 4.6" 0" βœ… Rainfall sufficient
Dec β€” 4.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Pearl River County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Rosemary Planting Timeline β€” Pearl River County, MS

Rosemary Planting Calendar

Activity When Date Range
Transplant Outdoors March 10 Mar 10 – Mar 24
Harvest June 2 Jun 2 – Oct 20

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

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Low β€” drought tolerant

πŸ“… Days to Maturity

80–180 days

πŸ§ͺ Soil pH

Needs 6–7.5 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 8b

πŸ“† Growing Season

266 days in Pearl River County

Growing Tips for Pearl River 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Rosemary in Pearl River County, MS?

Pearl River County is in Zone 8b with an average last frost of March 3. Plan your Rosemary planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Pearl River County, MS?

Pearl River County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 3 and first fall frost is November 24.

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Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Pearl River County gardeners in Zone 8b 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 Pearl River County, MS. Local conditions may vary. Last updated: April 2026.