Dahlia

Dahlia pinnata

Asteraceae · flowers · Mexico, Central America

EdibleMedium Maintenance

About Dahlia

A tuberous perennial producing spectacular blooms ranging from tiny pompons to dinner-plate-sized flowers over 10 inches across. Available in virtually every color except blue, with over 57,000 registered cultivars.

Growing Conditions

☀️

Sun

Full Sun

💧💧

Water

Medium

🌱

Soil

Rich, Well-drained

📈

Growth Rate

Fast

🌸

Bloom Season

Summer-Fall

🌈

Bloom Color

Mixed

Size & Dimensions

Height

Spread

Hardiness Zone Range

Suitable for USDA Zones 8 through 11

Plant Details

Family	Asteraceae
Category	Flowers
Native Region	Mexico, Central America
Scientific Name	Dahlia pinnata

Care Tips

✓Dig tubers after first frost in cold climates.
✓Pinch growing tips for bushier plants.
✓Provide support for tall varieties.
✓Fertilize regularly.

Fun Facts

★National flower of Mexico.
★The Aztecs grew them for food — tubers are edible.
★Over 57,000 named cultivars exist worldwide.

Was this data helpful?

Data verified: 2026-04

USDA Plants Database Missouri Botanical Garden

Frequently Asked Questions

What USDA hardiness zones can Dahlia grow in?

Dahlia (Dahlia pinnata) thrives in USDA hardiness zones 8 through 11. This means it can tolerate winter temperatures typical of these zones. Check your local zone to ensure it is suitable for your area.

How much sun and water does Dahlia need?

Dahlia requires full sun and has medium water needs. It grows best in rich, well-drained soil. Regular watering is recommended, especially during dry periods.

How tall and wide does Dahlia grow?

Dahlia typically reaches 5' tall with a spread of 2'. It has a fast growth rate and requires medium maintenance. Plan your garden spacing accordingly to give it room to reach its full size.

Is Dahlia deer resistant?

Dahlia is not typically considered deer resistant. If deer are common in your area, consider protecting young plants with fencing or using deer repellent sprays during the growing season.

When does Dahlia bloom and is it edible?

Dahlia blooms in summer-fall, producing mixed flowers. Parts of this plant are edible and can be used in cooking or eaten fresh. It belongs to the Asteraceae family and is native to Mexico, Central America.

Explore More Data Tools

For adjacent public-data tools, methodology notes, and network updates, visit DataPeek Facts.