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When to Plant Sunflower in Baylor County, TX

Sunflowers are tall, cheerful annuals grown for their edible seeds and as pollinator magnets. They come in sizes from 2-foot dwarfs to 12-foot giants.

Baylor County, Texas is in USDA Zone 7b. The average last spring frost is March 21 and the first fall frost is November 15, giving you a growing season of approximately 239 days.

At an elevation of 2,365 feet, Baylor County receives approximately 56.1 inches of rainfall annually with predominantly loam soil. Summer highs average 92ยฐF, providing good warmth for Sunflower during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sunflower root diseases.

Baylor County, TX (Zone 7b) Long season
239 days
Last Spring Frost March 21
239 growing days
First Fall Frost November 15

Baylor County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (102 days to spare)
Start indoors: Jan 24 Transplant: Mar 28 🍅 Harvest: Jun 6 – Jul 25
Recommended (50%) ✓ Fits season (106 days to spare)
Start indoors: Jan 31 Transplant: Apr 4 🍅 Harvest: Jun 13 – Aug 1
Safe Start (90%) ✓ Fits season (94 days to spare)
Start indoors: Feb 23 Transplant: Apr 27 🍅 Harvest: Jul 6 – Aug 24

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.

Plant Water Budget

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

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Sunflower needs ~1,615 GDD — county provides 4,541 GDD Excellent fit

Sunflower Planting Timeline โ€” Baylor County, TX

Sunflower Planting Calendar

Activity When Date Range
Start Indoors January 31 Jan 31 โ€“ Feb 14
Transplant Outdoors April 4 Apr 4 โ€“ Apr 18
Direct Sow March 28 Mar 28 โ€“ Apr 18
Harvest June 13 Jun 13 โ€“ Aug 1

Plant 1" deep ยท 18" apart ยท Rows 30" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors
March Direct Sow
April Transplant Outdoors Direct Sow
May โ€”
June Harvest
July Harvest
August Harvest
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

70โ€“100 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 7b

Growing Season

239 days

Growing Tips for Baylor County

Direct sow after last frost. Stake tall varieties in windy areas. Harvest seed heads when the back turns brown and seeds are plump. Dry heads upside down.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Sunflower in Baylor County, TX?

Baylor County is in Zone 7b with an average last frost of March 21. Plan your Sunflower planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Baylor County, TX?

Baylor County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 21 and first fall frost is November 15.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Baylor County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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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 Baylor County, TX. Local conditions may vary. Last updated: April 2026.