How to Grow Snapdragon

Updated June 2026

A cool-season flower for the home garden across the warmer US.

What it looks like as it grows

Snapdragon is a rewarding cool-season crop for backyard growers.

When to plant

Snapdragon is a cool-season crop. In the South and Southwest, plant in fall through winter when the heat eases. See your region on the snapdragon page for exact timing.

Varieties

• Rocket Mix, Tall cut-flower spikes (Botanical Interests)

How to grow it

• Sun & soil: full sun, rich well-drained soil with even moisture.
• Spacing: about 10 in between plants.
• Sowing: barely cover the seed.
• Water: roughly 1.1 gal per plant every 2 days in hot weather.

Pests & problems

Watch for Aphids and Rust mite. In humid regions, Rust, Downy mildew and Botrytis can appear, so space for airflow and water at the roots in the morning.

Harvest

Snapdragon is usually ready to harvest in about 2 months. Pick regularly to keep plants productive.

When to plant in your region

Pick your region to see exactly when to plant snapdragon where you garden.

See also: Snapdragon in the plant library →

Related guides