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When to Plant Begonias in Falls County, TX

Falls County, Texas Zone 8b June

Your June gardening checklist

Your Falls County, Texas garden is entering a new phase. Here's what's on the schedule for June and why each task matters now.

Avg. last frost March 17
Avg. first frost November 13
Soil temp (4") 81°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. It's harvest week for begonias

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

A few tasks this June that'll pay off in July
  • First harvests: begonias

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Wax begonias (Begonia × semperflorens) are the workhorse shade bedding plant of American horticulture, offering continuous bloom from transplant to hard frost. Bronze or green-leaved varieties perform well from deep shade to full sun (in northern zones) and tolerate summer humidity better than most cool- season flowers. A staple of mass plantings, containers, and window boxes.

Falls County, Texas is in USDA Zone 8b. The average last spring frost is March 17 and the first fall frost is November 13, giving you a growing season of approximately 241 days.

At an elevation of 66 feet, Falls County receives approximately 66.1 inches of rainfall annually with predominantly clay soil. Summer highs average 97°F, so Begonias may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Begonias, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Begonias root diseases.

Annual Blooms in Multi-season Pollinator-friendly Deer-resistant
Falls County, TX (Zone 8b) Long season
241 days
Last Spring Frost March 17
241 growing days
First Fall Frost November 13
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Falls County Soil Profile

Soil Type

Clay

Soil pH

7.1-8.2

Drainage

Well Drained

Begonias Planting Risk Windows

Early Start (70% safe) ✓ Fits season (37 days to spare)
Start indoors: Dec 26 Transplant: Feb 20 🌸 Bloom: May 1 – Oct 2
Recommended (50%) ✓ Fits season (31 days to spare)
Start indoors: Jan 6 Transplant: Mar 3 🌸 Bloom: May 12 – Oct 13
Safe Start (90%) ✓ Fits season (24 days to spare)
Start indoors: Jan 28 Transplant: Mar 25 🌸 Bloom: Jun 3 – Nov 4

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 Falls County

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

Soil pH

Your soil pH (7.1–8.2) is more alkaline than Begonias prefers (5.5–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

Your clay soil in Falls County is workable for Begonias. Add compost annually to improve structure.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Begonias.

How to Plant Begonias

8"
Between Plants
10"
Between Rows

Succession Planting Begonias

4
successive plantings in your 241-day season

Sow every 8 weeks. Last sowing by Aug 15 to harvest before frost.

Begonias Water Budget

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

Monthly Watering Guide for Begonias

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

Month Begonias Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 4.3" 4.7" 0" ✅ Rainfall sufficient
Apr 4.3" 6.7" 0" ✅ Rainfall sufficient
May 4.3" 10" 0" ✅ Rainfall sufficient
Jun 4.3" 9.5" 0" ✅ Rainfall sufficient
Jul 4.3" 9.2" 0" ✅ Rainfall sufficient
Aug 4.3" 7.4" 0" ✅ Rainfall sufficient
Sep 4.3" 7" 0" ✅ Rainfall sufficient
Oct 4.3" 4.1" 0.2" 💧 Light watering
Nov 4.3" 2.2" 2.1" 💧 Light watering
Dec 1.6" 0" ❄️ Dormant

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

Begonias 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.

Begonias needs ~1,820 GDD — county provides 5,482 GDD Excellent fit

Begonias Planting Timeline — Falls County, TX

Begonias Planting Calendar

Activity When Date Range
Start Indoors January 6 Jan 6 – Jan 20
Transplant Outdoors March 3 Mar 3 – Mar 17
Bloom May 12 May 12 – Oct 13

· 8" apart · Rows 10" 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
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Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

241 days in Falls County

Growing Tips for Begonias in Falls County

Direct sow Begonias outdoors after March 17 in Falls County when soil has warmed and frost danger has passed.

With Falls County's clay soil (36% clay), work in 3-4 inches of compost before planting Begonias. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 97°F in Falls County, provide afternoon shade for Begonias and water deeply in the morning.

General growing tips

Start seeds indoors 10–12 weeks before last frost — seed is dust-fine; surface-sow on moist mix under lights, do not cover. Bottom heat (70–75°F) speeds germination. Transplant after frost; begonias are not direct-sown in practice. Pinch seedlings once for branching. Keep soil evenly moist; avoid waterlogged conditions. Bronze-leaf types tolerate more sun; green- leaf types prefer shade to part-sun.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Begonias in Falls County, TX?

Falls County is in Zone 8b with an average last frost of March 17. Plan your Begonias planting based on this frost date — see the calendar above for exact timing.

What planting zone is Falls County, TX?

Falls County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 17 and first fall frost is November 13.

🌱

Your Falls County Garden Planner — Free

A 22-page printable planner built for Falls 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 Falls County, TX. Local conditions may vary. Last updated: June 2026.

Sources & credits

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