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When to Plant Nasturtium in Real County, TX

Real County, Texas Zone 8b July

Top priorities for Real County, Texas gardeners in July

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

Avg. last frost March 31
Avg. first frost November 8
Soil temp (4") 81°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Bring in the nasturtium

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

A few tasks this July that'll pay off in August
  • First harvests: nasturtium

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Nasturtium (Tropaeolum majus) is a fast-growing annual with distinctive round, lily-pad leaves and bold trumpet-shaped blooms in warm oranges, reds, and yellows. Both the flowers and leaves are edible with a peppery watercress flavor. Planted near vegetables, nasturtiums act as a sacrifice trap-crop, luring aphids away from more valuable plants. They thrive in poor, dry soil — rich conditions produce lush foliage but few flowers.

Real County, Texas is in USDA Zone 8b. The average last spring frost is March 31 and the first fall frost is November 8, giving you a growing season of approximately 222 days.

At an elevation of 4,368 feet, Real County receives approximately 60.8 inches of rainfall annually with predominantly loam soil. Summer highs average 96°F, so Nasturtium may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Nasturtium root diseases.

Annual Blooms in Multi-season Pollinator-friendly Deer-resistant Good for cutting Fragrant
Real County, TX (Zone 8b) Long season
222 days
Last Spring Frost March 31
222 growing days
First Fall Frost November 8

Real County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.7

Drainage

Well Drained

Nasturtium Planting Risk Windows

Early Start (70% safe) ✓ Fits season (14 days to spare)
Start indoors: Feb 18 Transplant: Mar 4 🌸 Bloom: Apr 29 – Oct 14
Recommended (50%) ✓ Fits season (12 days to spare)
Start indoors: Mar 3 Transplant: Mar 17 🌸 Bloom: May 12 – Oct 27
Safe Start (90%) ✓ Fits season (13 days to spare)
Start indoors: Mar 22 Transplant: Apr 5 🌸 Bloom: May 31 – Nov 15

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 Real County

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

Soil pH

Your soil pH (6.6–7.7) is within Nasturtium's preferred range (6.0–8.0).

Soil Texture

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

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Nasturtium.

How to Plant Nasturtium

0.5"
Planting Depth
10"
Between Plants
12"
Between Rows

Succession Planting Nasturtium

4
successive plantings in your 222-day season

Sow every 6.3 weeks. Last sowing by Sep 04 to harvest before frost.

Nasturtium Water Budget

Plant needs
0.5″/week
Rainfall provides
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Nasturtium

Nasturtium 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 Nasturtium Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 2.2" 3.4" 0" ✅ Rainfall sufficient
Apr 2.2" 6.8" 0" ✅ Rainfall sufficient
May 2.2" 9.8" 0" ✅ Rainfall sufficient
Jun 2.2" 8.8" 0" ✅ Rainfall sufficient
Jul 2.2" 8.5" 0" ✅ Rainfall sufficient
Aug 2.2" 7.7" 0" ✅ Rainfall sufficient
Sep 2.2" 4.9" 0" ✅ Rainfall sufficient
Oct 2.2" 3.7" 0" ✅ Rainfall sufficient
Nov 2.2" 2.1" 0.1" 💧 Light watering
Dec 1.7" 0" ❄️ Dormant

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

Nasturtium 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.

Nasturtium needs ~1,320 GDD — county provides 4,884 GDD Excellent fit

Nasturtium Planting Timeline — Real County, TX

Nasturtium Planting Calendar

Activity When Date Range
Start Indoors March 3 Mar 3 – Mar 17
Transplant Outdoors March 17 Mar 17 – Mar 31
Direct Sow March 17 Mar 17 – Apr 7
Bloom May 12 May 12 – Oct 27

Plant 0.5" deep · 10" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

55–65 days

🧪 Soil pH

Needs 6–8 · Your soil: ideal

🗺️ USDA Zone

Zone 8b

📆 Growing Season

222 days in Real County

Growing Tips for Nasturtium in Real County

Direct sow Nasturtium outdoors after March 31 in Real County when soil has warmed and frost danger has passed.

With summer highs reaching 96°F in Real County, provide afternoon shade for Nasturtium and water deeply in the morning.

General growing tips

Direct-sow large seeds 1/2 inch deep after last frost; soak seeds overnight to speed germination (7-10 days). Nasturtiums dislike root disturbance so direct sowing is strongly preferred. Avoid fertilizing — poor soil brings the best bloom. Trailing types can cover banks and climb trellises; dwarf types suit containers. In hot climates (zones 9+) plant in fall for winter/spring bloom as plants struggle in peak summer heat.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Nasturtium in Real County, TX?

Real County is in Zone 8b with an average last frost of March 31. Plan your Nasturtium planting based on this frost date — see the calendar above for exact timing.

What planting zone is Real County, TX?

Real County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 31 and first fall frost is November 8.

🌱

Your Real County Garden Planner — Free

A 22-page printable planner built for Real 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 Real 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.