8 named cultivars

bulb corm tuber

Dahlia

The Story

Plant Bio

Dahlias are known for their vibrant blooms and ability to attract pollinators.

Dahlias are celebrated for their incredible diversity in flower color, size, and form, ranging from small single petals to large, complex 'dinner plate' blooms.

Uses & Benefits:

Dahlias add vibrant color and dramatic form to garden beds and cut flower arrangements, brightening spaces with their large, showy blooms.

They can be harvested for stunning floral displays and bouquets, enhancing interior decor.

Dahlias attract pollinators like bees and butterflies, supporting local ecosystems.

Essentials

At a Glance

Plant Type

Bulb Corm Tuber

Height

36 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

8, 9, 10

Water

Moderate

Humidity

Prefers moderate humidity

Lifespan

Perennial in zones 8-11

Native To

Mexico and Central America

Toxicity

Mildly toxic to pets

Planting

How to Grow

Tuck tubers into well-draining soil in early spring.
Water regularly to keep soil moist but not soggy.
Fertilize monthly with a balanced fertilizer during growing season.
Pinch back young shoots to encourage bushier growth.
Stake taller varieties for support as they grow.
Lift and store tubers in fall after foliage dies back.

Pro Tip

Plant in full sun with rich, well-drained soil for best blooms.

Keep It Thriving

Care Guide

Do

Water consistently during dry spells 🌱
Deadhead spent flowers to promote continuous blooming
Apply balanced fertilizer monthly during active growth

Don't

Avoid overwatering to prevent tuber rot ❌
Don't transplant when in flower
Refrain from using heavy, clay soil that retains water

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Fertilize
Lift Store
Pinch
Plant
Stake

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful garden bedsBright border edgesCut flower arrangements

Companion Plants

Marigolds Zinnias Cosmos Salvia Nicotiana

Multiply

Propagation Methods

Good to Know

Common Questions

Dahlia questions

What zones can Dahlia grow in?

Dahlia is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Dahlia deer resistant?

Not reliably. Deer may browse Dahlia, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Dahlia bloom?

Dahlia typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Dahlia need full sun?

Dahlia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.