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When to Plant Rue in Medina County, TX

Medina County, Texas Zone 9a May

Top priorities for Medina County, Texas gardeners in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Medina County, Texas.

Avg. last frost March 3
Avg. first frost November 23
Soil temp (4") 71°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Basket week: rue

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Get ahead of June
  • First harvests: rue

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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.

Medina County, Texas is in USDA Zone 9a. The average last spring frost is March 3 and the first fall frost is November 23, giving you a growing season of approximately 265 days.

At an elevation of 1,498 feet, Medina County receives approximately 56.7 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Rue during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Rue root diseases.

Medina County, TX (Zone 9a) Long season
265 days
Last Spring Frost March 3
265 growing days
First Fall Frost November 23

Medina County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (130 days to spare)
Transplant: Feb 24 🍅 Harvest: May 5 – Jul 7
Recommended (50%) ✓ Fits season (125 days to spare)
Transplant: Mar 10 🍅 Harvest: May 19 – Jul 21
Safe Start (90%) ✓ Fits season (114 days to spare)
Transplant: Apr 8 🍅 Harvest: Jun 17 – Aug 19

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 Medina County

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

Soil pH

Your soil pH (6.6–7.6) overlaps with Rue's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Medina County is excellent for Rue — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Rue.

How to Plant Rue

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

Succession Planting Rue

4
successive plantings in your 265-day season

Sow every 8 weeks. Last sowing by Aug 25 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.9″/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 Rue

Rue 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 Rue Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.2" 3.6" 0" ✅ Rainfall sufficient
Apr 2.2" 5.6" 0" ✅ Rainfall sufficient
May 2.2" 8.1" 0" ✅ Rainfall sufficient
Jun 2.2" 8" 0" ✅ Rainfall sufficient
Jul 2.2" 8.3" 0" ✅ Rainfall sufficient
Aug 2.2" 6.8" 0" ✅ Rainfall sufficient
Sep 2.2" 5.6" 0" ✅ Rainfall sufficient
Oct 2.2" 4.1" 0" ✅ Rainfall sufficient
Nov 2.2" 1.9" 0.3" 💧 Light watering
Dec 1.4" 0" ❄️ Dormant

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

Rue 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.

Rue needs ~1,520 GDD — county provides 5,035 GDD Excellent fit

Rue Planting Timeline — Medina County, TX

Rue Planting Calendar

Activity When Date Range
Transplant Outdoors March 10 Mar 10 – Mar 24
Harvest May 19 May 19 – Jul 21

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

Month-by-Month Timeline

MonthActivities
January
February
March Transplant Outdoors
April
May Harvest
June Harvest
July Harvest
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 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

265 days in Medina County

Growing Tips for Rue in Medina County

Direct sow Rue outdoors after March 03 in Medina County when soil has warmed and frost danger has passed.

General growing tips

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 Medina County, TX?

Medina County is in Zone 9a with an average last frost of March 3. Plan your Rue planting based on this frost date — see the calendar above for exact timing.

What planting zone is Medina County, TX?

Medina County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 3 and first fall frost is November 23.

🌱

Your Medina County Garden Planner — Free

A 24-page printable planner built for Medina County (Zone 9a). 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 Medina County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.