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When to Plant Impatiens in Pecos County, TX

Pecos County, Texas Zone 8b July

July in Pecos County, Texas — your action list

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

Avg. last frost March 13
Avg. first frost November 15
Soil temp (4") 87°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
  1. It's harvest week for impatiens

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

To set up a strong August, finish these tasks
  • First harvests: impatiens

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Impatiens (Impatiens walleriana) are the go-to annual for shaded beds and containers. They produce a continuous carpet of flat-faced blooms from transplant until frost, needing little deadheading. Their preference for consistent moisture and part-shade makes them ideal under trees and along north-facing borders.

Pecos County, Texas is in USDA Zone 8b. The average last spring frost is March 13 and the first fall frost is November 15, giving you a growing season of approximately 247 days.

At an elevation of 1,445 feet, Pecos County receives approximately 42.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 103°F, so Impatiens may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Impatiens will need more frequent watering and organic matter to retain nutrients.

Annual Blooms in Summer Pollinator-friendly
Pecos County, TX (Zone 8b) Long season
247 days
Last Spring Frost March 13
247 growing days
First Fall Frost November 15

Pecos County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.4-8.6

Drainage

Well Drained

Impatiens Planting Risk Windows

Early Start (70% safe) ✓ Fits season (35 days to spare)
Start indoors: Jan 7 Transplant: Feb 25 🌸 Bloom: May 6 – Oct 7
Recommended (50%) ✓ Fits season (30 days to spare)
Start indoors: Jan 16 Transplant: Mar 6 🌸 Bloom: May 15 – Oct 16
Safe Start (90%) ✓ Fits season (21 days to spare)
Start indoors: Feb 11 Transplant: Apr 1 🌸 Bloom: Jun 10 – Nov 11

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 Pecos County

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

Soil pH

Your soil pH (7.4–8.6) is more alkaline than Impatiens prefers (6.0–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting Impatiens.

How to Plant Impatiens

10"
Between Plants
12"
Between Rows

Succession Planting Impatiens

4
successive plantings in your 247-day season

Sow every 6.9 weeks. Last sowing by Sep 01 to harvest before frost.

Impatiens Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 745 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Impatiens

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

Month Impatiens Needs Rainfall You Supplement Action
Jan 2.6" 0" ❄️ Dormant
Feb 2.3" 0" ❄️ Dormant
Mar 4.3" 2.6" 1.7" 💧 Light watering
Apr 4.3" 1.6" 2.7" 🚿 Regular watering
May 4.3" 0.9" 3.4" 🚿 Regular watering
Jun 4.3" 1.6" 2.7" 🚿 Regular watering
Jul 4.3" 7.8" 0" ✅ Rainfall sufficient
Aug 4.3" 8.8" 0" ✅ Rainfall sufficient
Sep 4.3" 5.6" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 2.3" 2" 💧 Light watering
Dec 2.6" 0" ❄️ Dormant

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

Impatiens 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.

Impatiens needs ~1,839 GDD — county provides 6,730 GDD Excellent fit

Impatiens Planting Timeline — Pecos County, TX

Impatiens Planting Calendar

Activity When Date Range
Start Indoors January 16 Jan 16 – Jan 30
Transplant Outdoors March 6 Mar 6 – Mar 20
Bloom May 15 May 15 – Oct 16

· 10" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors
February
March Transplant Outdoors
April
May Bloom
June Bloom
July Bloom
August Bloom
September Bloom
October Bloom
November
December

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

60–75 days

🧪 Soil pH

Needs 6–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

247 days in Pecos County

Growing Tips for Impatiens in Pecos County

Direct sow Impatiens outdoors after March 13 in Pecos County when soil has warmed and frost danger has passed.

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

With summer highs reaching 103°F in Pecos County, provide afternoon shade for Impatiens and water deeply in the morning.

General growing tips

Start seeds indoors 8–10 weeks before last frost at 70–75°F; germination requires light — do not cover seeds. Transplant after last frost once nights consistently exceed 50°F. Water regularly — wilting causes bud drop and they rarely fully recover the same flush. Watch for impatiens downy mildew (IDM); consider New Guinea impatiens as a resistant alternative in affected regions. Pinch tips at planting to encourage branching.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Impatiens in Pecos County, TX?

Pecos County is in Zone 8b with an average last frost of March 13. Plan your Impatiens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Pecos County, TX?

Pecos County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 13 and first fall frost is November 15.

🌱

Your Pecos County Garden Planner — Free

A 22-page printable planner built for Pecos County (Zone 8b). 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 Pecos County, TX. Local conditions may vary. Last updated: July 2026.

Sources & credits

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