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When to Plant Rue in Howard County, TX

Rue is a bitter, aromatic perennial herb with bluish-green foliage used historically in medicine and as a pest deterrent. Handle with care as its sap can cause skin irritation.

Howard County, Texas is in USDA Zone 7b. The average last spring frost is March 26 and the first fall frost is November 12, giving you a growing season of approximately 231 days.

At an elevation of 3,918 feet, Howard County receives approximately 59.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 99Β°F, so Rue may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring β€” great for early planting β€” but Rue will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Rue root diseases.

Howard County, TX (Zone 7b) Long season
231 days
Last Spring Frost March 26
231 growing days
First Fall Frost November 12

Howard County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.9-8.3

Drainage

Well Drained

Monthly Watering Guide for Rue

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

Month Rue Needs Rainfall You Supplement Action
Jan β€” 4.6" 0" ❄️ Dormant
Feb β€” 3.3" 0" ❄️ Dormant
Mar 4.3" 3.2" 1.1" πŸ’§ Light watering
Apr 4.3" 2.3" 2" πŸ’§ Light watering
May 4.3" 1.5" 2.8" 🚿 Regular watering
Jun 4.3" 2" 2.3" 🚿 Regular watering
Jul 4.3" 10.3" 0" βœ… Rainfall sufficient
Aug 4.3" 11.5" 0" βœ… Rainfall sufficient
Sep 4.3" 8.2" 0" βœ… Rainfall sufficient
Oct 4.3" 5.2" 0" βœ… Rainfall sufficient
Nov 4.3" 3.5" 0.8" πŸ’§ Light watering
Dec β€” 3.6" 0" ❄️ Dormant

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

Rue Planting Timeline β€” Howard County, TX

Rue Planting Calendar

Activity When Date Range
Transplant Outdoors April 2 Apr 2 – Apr 16
Harvest June 11 Jun 11 – Aug 13

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 β€”
October β€”
November β€”
December β€”

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Low β€” drought tolerant

πŸ“… Days to Maturity

70–90 days

πŸ§ͺ Soil pH

Needs 6–7.5 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 7b

πŸ“† Growing Season

231 days in Howard County

Growing Tips for Howard County

Start seeds indoors or direct sow. Plant in well-drained soil. Wear gloves when handling as sap can cause phytophotodermatitis. Prune in early spring.

Companion Planting

Good Companions

Avoid Planting Near

  • Basil
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Rue in Howard County, TX?

Howard County is in Zone 7b with an average last frost of March 26. Plan your Rue planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Howard County, TX?

Howard County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 26 and first fall frost is November 12.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Howard County gardeners in Zone 7b 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 Howard County, TX. Local conditions may vary. Last updated: April 2026.