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.

'AC Dark Horse' is a dahlia with large flowers with twisted petals in gorgeous dark pink and purple with white tips.

Dahlia 'Addison June' has dark purple to magenta pompon-type flowers that form honeycombed spheres 3 inches wide.

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.

Dahlia Anemone 'Bon Odori' has creamy white outer petals with red streaks and a central cushion of creamy yellow petals.

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

'Life Style' is an unusually stunning, fully double dahlia with golden yellow petals on top of a double row of lavender-pink.

Dahlia 'Plantinum Blonde' has cream-white outer petals and a central cushion of creamy-yellow petals on tall stems.

'Poodle Skirt' is an anemone-flowered Dahlia of rose-pink petals with a central pincushion of reddish purple.

Dahlia 'Que Sera' has cream-white and mauve outer petals and central cushion on tall stems.

'Totally Tangerine' is an anemone-flowered Dahlia with soft pink petals and undertones of rose pink with a central orange pincushion.

'Babylon' is a beautiful decorative-type dahlia with deep red flowers.

Dahlia 'Babette' displays a ball-type form with deep wine-red blooms and yellow centres.

Dahlia 'Boom Boom White' displays ball-type flowers of ivory-white on long, 32 - 36 inch stems.

Dahlia 'Cornel Bronze' displays medium-sized ball-type flowers with bronze and coral-orange flowers.

Dahlia 'Ilse' displays large, ball-type flowers of pink with hints of yellow on long stems.

Dahlia 'Jowey Hubert' displays ball-type, multi-colored flowers in red-orange with lemon-cream edging.

Dahlia 'Jowey Joshua' displays ball-type, multi-coloured flowers in lemon-cream and red-orange.

Dahlia 'Sylvia' displays ball-type flowers of apricot-orange on long stems.

'Bodacious' is a decorative type dahlia with large flowers comprised of red petals with light yellow tips.

Dahlia 'Birgitta Alida' is a large dinnerplate cultivar with huge chocolate-burgundy-red flowers.

Dahlia 'Darkarin' is a lush and lusty decorative type dahlia with deep red to purple-red flowers with white frosted tips atop burgundy foliage.

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