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When to Plant Rue in Matagorda County, TX

Matagorda County, Texas Zone 9b May

Your May gardening checklist

Your garden in Matagorda County, Texas is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost February 19
Avg. first frost December 6
Soil temp (4") 76°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Collect rue at their peak

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

A few tasks this May that'll pay off in 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.

Matagorda County, Texas is in USDA Zone 9b. The average last spring frost is February 19 and the first fall frost is December 6, giving you a growing season of approximately 290 days.

At an elevation of 161 feet, Matagorda County receives approximately 57.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Rue may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — 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.

Matagorda County, TX (Zone 9b) Year-round
290 days
Last Spring Frost February 19
290 growing days
First Fall Frost December 6
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Matagorda County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.4-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (155 days to spare)
Transplant: Feb 14 🍅 Harvest: Apr 25 – Jun 27
Recommended (50%) ✓ Fits season (150 days to spare)
Transplant: Feb 26 🍅 Harvest: May 7 – Jul 9
Safe Start (90%) ✓ Fits season (141 days to spare)
Transplant: Mar 19 🍅 Harvest: May 28 – Jul 30

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 Matagorda County

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

Soil pH

Your soil pH (5.4–6.5) is more acidic than Rue prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Matagorda County warms quickly in spring but drains fast. Rue will need more frequent watering and regular compost additions to retain nutrients.

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 290-day season

Sow every 8 weeks. Last sowing by Sep 07 to harvest before frost.

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

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 1.4" 0" ❄️ Dormant
Feb 2.2" 1.9" 0.3" 💧 Light watering
Mar 2.2" 3.4" 0" ✅ Rainfall sufficient
Apr 2.2" 6.2" 0" ✅ Rainfall sufficient
May 2.2" 7.9" 0" ✅ Rainfall sufficient
Jun 2.2" 9.4" 0" ✅ Rainfall sufficient
Jul 2.2" 7.8" 0" ✅ Rainfall sufficient
Aug 2.2" 6.9" 0" ✅ Rainfall sufficient
Sep 2.2" 5.3" 0" ✅ Rainfall sufficient
Oct 2.2" 3.7" 0" ✅ Rainfall sufficient
Nov 2.2" 1.8" 0.4" 💧 Light watering
Dec 2.2" 1.4" 0.8" 💧 Light watering

Water needs are for active growing months only (Feb–Dec in Matagorda 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 ~1,700 GDD — county provides 6,183 GDD Excellent fit

Rue Planting Timeline — Matagorda County, TX

Rue Planting Calendar

Activity When Date Range
Transplant Outdoors February 26 Feb 26 – Mar 12
Harvest May 7 May 7 – Jul 9

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

Month-by-Month Timeline

MonthActivities
January
February Transplant Outdoors
March Transplant Outdoors
April
May Harvest
June Harvest
July Harvest
August
September
October
November
December
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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: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

290 days in Matagorda County

Growing Tips for Rue in Matagorda County

Direct sow Rue outdoors after February 19 in Matagorda County when soil has warmed and frost danger has passed.

Sandy soil in Matagorda County dries quickly — mulch Rue with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Matagorda County, TX?

Matagorda County is in Zone 9b with an average last frost of February 19. Plan your Rue planting based on this frost date — see the calendar above for exact timing.

What planting zone is Matagorda County, TX?

Matagorda County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 19 and first fall frost is December 6.

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Your Matagorda County Garden Planner — Free

A 24-page printable planner built for Matagorda County (Zone 9b). 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 Matagorda 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.