Dahlia imperialis is the giant "tree dahlia" that reaches 10-20 feet tall with late late lavender blooms 3-4 inches wide.

Dahlia imperialis 'Alba' is the white form of the giant "tree dahlia" that reaches 10-20 feet tall with single white flowers.

Dahlia 'Alfred Grille' is amongst the most dramatic of cactus-flowered dahlias with samon pink and yellow bicolour flowers.

Dahlia Anemone 'Blue Bayou' has lavender-blue outer petals and a central cushion of darker burgundy petals on tall dark stems.

'Boogie Woogie' is a large-blooming anemone-type Dahlia with a canary yellow centre and white and fuschia-pink streaked petals.

Dahlia 'Bishop of Auckland' has rich deep red single flowers from June until frost over burgundy foliage.

Dahlia 'Bishop of Canterbury' has rich magenta-red flowers from June until frost over burgundy foliage.

Dahlia 'Bishop of Dover' has a peony type, white flower highlighted with pink and lavender.

Dahlia 'Bishop of Leicester' has lavender single flowers highlighted with pink atop rich, burgundy foliage.

'Bishop of Llandaff' is the most popular of all burgundy-leaved Dahlias with red flowers from June until frost.

Dahlia 'Bishop of Oxford' has cheerful orange flowers from June to frost above burgundy foliage.

Dahlia 'Bishop of York' has bright yellow flowers from June to frost over burgundy foliage.

Dahlegria Tricolore is a stunning single dahlia with glowing tones of pink, coral, red, and yellow all atop burgundy foliage.

From the Dark Angel series, Dahlia 'American Pie' has lavender pink flowers with white edges over burgundy foliage.

From the Dark Angel series, Dahlia 'Braveheart' has bold magenta-purple flowers over burgundy foliage.

From the Dark Angel series, Dahlia 'Dracula' has rich red flowers over burgundy foliage.

From the Dark Angel series, Dahlia 'Dragon Ball' has unique salmon-coloured flowers over burgundy foliage.

Dahlia 'Pretty Woman' has small, bright pink and white flowers with purple centres atop rich, burgundy foliage.

From the Dark Angel series, Dahlia 'Pulp Fiction' has bright red flowers over burgundy foliage.

Dahlia 'Star Wars' has small bicolour orange-red and yellow flowers over burgundy foliage.

From the Dark Angel series, Dahlia 'Taxi Driver' has bright yellow flowers over burgundy foliage.

Dahlia 'Fascination' has rich magenta, semi-double flowers over burgundy foliage.

'Happy Days Lemon' is a dwarf Dahlia that produces single lemon yellow flowers with bright yellow centres. Pollinator attractor.

From the Happy Single series, Dahlia 'Happy Butterfly' has salmon to apricot flowers with yellow edges over burgundy foliage.

From the Happy Single series, Dahlia 'First Love' has apricot, yellow, and red single flowers over burgundy foliage.