When to Plant Celosia in Tomball, Texas (77375)

Location

Tomball, Texas

ZIP Code

77375

USDA Zone

Last Frost

Tuesday, February 10, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, December 30, 2025

Transplant Outdoors Tuesday, February 17, 2026

Pro Tip: Start Celosia seeds indoors 6 weeks before your last frost date, then transplant outdoors around Tuesday, February 17, 2026.

🌿 Plant Details

Scientific Name Celosia argentea

Days to Maturity 75 days

Mature Height 12-36"

Spread 9"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

9" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 10-14 days

Ready to Plant Celosia in Tomball?

Get your seeds now so they're ready by Tuesday, December 30, 2025.

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🤝 Good Companions

MarigoldZinniaBasil

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Growing Celosia in Zone 9b

Celosia (Celosia argentea) is a popular garden vegetable. In Tomball, Texas, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Tuesday, December 30, 2025.

Your average last frost date is Tuesday, February 10, 2026. Plan to transplant your Celosia seedlings outdoors around Tuesday, February 17, 2026, about 1 weeks after your last frost date.