When to Plant Cosmos in Frisco, Texas (75034)

Location

Frisco, Texas

ZIP Code

75034

USDA Zone

Last Frost

Sunday, March 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, March 15, 2026

Pro Tip: Sow Cosmos directly outdoors around your last frost date when soil starts to warm.

🌿 Plant Details

Scientific Name Cosmos bipinnatus

Days to Maturity 60 days

Mature Height 24-60"

Spread 18"

Type Annual

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Low-Moderate

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Cosmos in Frisco?

Get your seeds now so they're ready by Sunday, March 15, 2026.

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Other Plants for Frisco

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Growing Cosmos in Zone 8b

Cosmos (Cosmos bipinnatus) is a popular garden vegetable. In Frisco, Texas, which is in USDA Hardiness Zone 8b, you should direct sow seeds around Sunday, March 15, 2026.

Your average last frost date is Sunday, March 15, 2026. Cosmos grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.