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When to Plant Rosemary in Mason County, TX

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.

Mason County, Texas is in USDA Zone 8a. The average last spring frost is March 25 and the first fall frost is November 11, giving you a growing season of approximately 231 days.

At an elevation of 4,557 feet, Mason County receives approximately 49.9 inches of rainfall annually with predominantly loam soil. Summer highs average 91Β°F, providing good warmth for Rosemary during the growing season.

Mason County, TX (Zone 8a) Long season
231 days
Last Spring Frost March 25
231 growing days
First Fall Frost November 11

Mason County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.5

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€” 1.3" 0" ❄️ Dormant
Feb β€” 1.9" 0" ❄️ Dormant
Mar 4.3" 2.9" 1.4" πŸ’§ Light watering
Apr 4.3" 4.6" 0" βœ… Rainfall sufficient
May 4.3" 7.7" 0" βœ… Rainfall sufficient
Jun 4.3" 8.3" 0" βœ… Rainfall sufficient
Jul 4.3" 6" 0" βœ… Rainfall sufficient
Aug 4.3" 6.3" 0" βœ… Rainfall sufficient
Sep 4.3" 4.8" 0" βœ… Rainfall sufficient
Oct 4.3" 3.4" 0.9" πŸ’§ Light watering
Nov 4.3" 1.5" 2.8" 🚿 Regular watering
Dec β€” 1.4" 0" ❄️ Dormant

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

Rosemary Planting Timeline β€” Mason County, TX

Rosemary Planting Calendar

Activity When Date Range
Transplant Outdoors April 1 Apr 1 – Apr 15
Harvest June 24 Jun 24 – Nov 11

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

Month-by-Month Timeline

MonthActivities
January β€”
February β€”
March β€”
April Transplant Outdoors
May β€”
June Harvest
July Harvest
August Harvest
September Harvest
October Harvest
November Harvest
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 8a

πŸ“† Growing Season

231 days in Mason County

Growing Tips for Mason 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 Mason County, TX?

Mason County is in Zone 8a with an average last frost of March 25. Plan your Rosemary planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Mason County, TX?

Mason County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 25 and first fall frost is November 11.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Mason County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Mason County, TX. Local conditions may vary. Last updated: April 2026.