Species

Dahlia cactusCactus Dahlia

8 other cultivars

perennial

Tam Tam Dahlia

Dahlia cactus 'Tam Tam'

The Story

Plant Bio

Dahlia 'Tam Tam' is known for its bold, spiky flowers and vibrant color.

This cultivar features fully double blooms with a unique cactus flower shape, making it stand out.

Uses & Benefits:

Dahlias are vibrant, eye-catching flowers perfect for adding bold color to gardens and containers.

Their tubers can be stored over winter and replanted yearly, providing sustainable color.

Attract pollinators like bees and butterflies, supporting local ecosystems.

SpeciesDahlia cactusCactus Dahlia

Essentials

At a Glance

Plant Type

Perennial

Height

36 inches

Width

24 inches

Light

Full Sun

Zones

8, 9, 10

Water

Moderate

Humidity

Moderate

Lifespan

Tender Perennial

Native To

Mexico and Central America

Toxicity

Mildly toxic to dogs and cats

Planting

How to Grow

Tuck tubers into well-draining soil in early spring.
Water thoroughly after planting and keep soil moist but not soggy.
Place in full sun for at least 6 hours daily for optimal growth.
Fertilize every 4-6 weeks with a balanced fertilizer during the growing season.
Support tall varieties with stakes to prevent toppling.
Lift and store tubers in fall after foliage dies back for overwintering.

Pro Tip

Use a light, well-draining soil mix and avoid overwatering to prevent rot.

Keep It Thriving

Care Guide

Do

Water regularly during the growing season 🌱
Pinch back to encourage bushier growth
Apply fertilizer monthly for vigorous blooms
Deadhead spent flowers to promote continuous flowering

Don't

Avoid overwatering, which can cause rot ❌
Don’t expose tubers to freezing temperatures
Refrain from using heavy clay soil without amendments
Don’t forget to support tall varieties

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vivid container displayColorful flower bedBold garden focal point

Companion Plants

Marigold Zinnia Cosmos Salvia Petunia

Multiply

Propagation Methods

Good to Know

Common Questions

Tam Tam Dahlia questions

What zones can Tam Tam Dahlia grow in?

Tam Tam 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 Tam Tam Dahlia deer resistant?

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

When does Tam Tam Dahlia bloom?

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

Does Tam Tam Dahlia need full sun?

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