Species

Dahlia variabilisDahlia

18 other cultivars

perennial

Flashback Dahlia

Dahlia variabilis 'Flashback'

The Story

Plant Bio

Dahlia variabilis 'Flashback' features striking multicolored blooms that attract pollinators and brighten up gardens.

The 'Flashback' cultivar is known for its vibrant, bi-colored flowers that resemble fireworks, making it a standout in any garden.

Uses & Benefits:

Dahlias add vibrant color and texture to garden beds and containers, attracting pollinators.

They can be cut for stunning floral arrangements that last over a week.

Providing nectar for bees and butterflies, supporting local pollinator populations.

SpeciesDahlia variabilisDahlia

Essentials

At a Glance

Plant Type

Perennial

Height

24"

Width

18"

Light

Full Sun

Zones

8, 9, 10

Water

Moderate

Humidity

Moderate

Lifespan

Perennial in warm zones, annual elsewhere

Native To

Americas

Toxicity

Toxic to dogs and cats

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds or tubers into well-draining soil in early spring.
Water regularly to keep soil moist but not waterlogged.
Provide full sun for optimal flowering.
Fertilize monthly with a balanced fertilizer during the growing season.
Pinch back young plants to encourage bushier growth.
Lift tubers in fall after foliage dies back and store in a cool, dry place.

Pro Tip

Plant tubers at a depth twice their size for vigorous growth and abundant blooms.

Keep It Thriving

Care Guide

Do

Water consistently during dry spells 🌱
Apply a balanced fertilizer monthly
Stake tall varieties to prevent wind damage

Don't

Avoid overwatering to prevent rot ❌
Don’t plant in poorly drained soil
Refrain from cutting back all foliage in fall

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 border plantVivid container displayCut flower for arrangements

Companion Plants

Marigolds Zinnias Salvia CosmosSnapdragons

Multiply

Propagation Methods

Good to Know

Common Questions

Flashback Dahlia questions

What zones can Flashback Dahlia grow in?

Flashback 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 Flashback Dahlia deer resistant?

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

When does Flashback Dahlia bloom?

Flashback 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 Flashback Dahlia need full sun?

Flashback Dahlia does best in full sun (6+ hours).