Group 2, Viticella Group.  Lilac - blue, yellow anthers.  Moderate fragrance.  Very large, single bloom form.  Late spring to early summer.  USDA zone 6a and warmer.  
Height: 4'11" to 6'7" (150 to 200cm).   Raymond J. Evison (1998), Mogens Nyegaard Olesen (1998).

1 favorite vote.  

Early Large Flowered, Group 2.  Blue.  Single bloom form.  Late spring to early summer, early autumn.  USDA zone 5b through 9b.  Height of 6' to 8' (185 to 245 cm).   Raymond J. Evison (1990).

1 favorite vote.  

Herbaceous Group, Late, Small-flowered.  Blue - mauve.  Single bloom form.  Late spring to early autumn.  USDA zone 4b through 9b.  Height of 5' to 6' (150 to 185 cm).   Barry Fretwell (1990).

1 favorite vote.  Average rating: EXCELLENT.  

Group 3, Large-flowered, Late.  Light blue, ages to mauve .  Single bloom form.  Mid-to-late summer.  USDA zone 4b through 9b.  Height of 8' to 12' (245 to 365 cm).   George JACKMAN & Son (1875).

1 favorite vote.  

Group 3, Herbaceous Group.  Light purple - blue, white stamens.  Medium to large, semi-nodding, star-shaped bloom form.  Early summer to early autumn.  Height of 39" to 4' 11" (100 to 150 cm).   Wim Snoeijer (2000).

1 favorite vote.  

Early Large Flowered, Viticella Group.  Mauve, yellow stamens.  Midsummer to midautumn.  USDA zone 5a through 9a.  
Height: 8'2" to 9'10" (250 to 300cm).   Raymond J. Evison (1996), Mogens Nyegaard Olesen (1996).

1 favorite vote.  

Group 2, Viticella Group.  Violet - blue, ages to deep blue .  None / no fragrance.  Medium, single bloom form.  Late spring to early autumn.  USDA zone 6b and warmer.  
Height: 4'11" to 6'7" (150 to 200cm).   Raymond J. Evison (1994), Mogens Nyegaard Olesen (1994).

1 favorite vote.  

Early Large Flowered, Group 2.  Blue, lilac shading.  Double bloom form.  Late spring to early summer, early autumn.  USDA zone 4b through 9b.  Height of 6' to 8' (185 to 245 cm).   George JACKMAN & Son (1871).

1 favorite vote.  

Early Large Flowered, Group 2.  Purple, light green anthers, ages to blue .  Very large, single bloom form.  Late spring to early summer, late summer to early autumn.  USDA zone 6a and warmer.  Height of 4' 11" to 6' 7" (150 to 200 cm).   Raymond J. Evison (2009), Mogens Nyegaard Olesen (2009).

1 favorite vote.  

Early Large Flowered, Group 2.  Blue, ages to light blue .  Very large, double bloom form.  Late spring to early autumn.  USDA zone 2a and warmer.  Height of 8' 2" to 9' 10" (250 to 300 cm).   Georges Truffaut (....-1948) (1964).

1 favorite vote.  

Early Large Flowered, Group 2.  Blue, white anthers.  Single bloom form.  Late spring to early summer, early autumn.  USDA zone 4b through 9b.  Height of 8' to 12' (245 to 365 cm).   Walter Pennell.

1 favorite vote.  

Group 2, Viticella Group.  Light blue to white, cream anthers.  Very large, single bloom form.  Late spring to early summer, late summer to early autumn.  USDA zone 6a and warmer.  
Height: 6'7" to 8'2" (200 to 250cm).   Raymond J. Evison (1998), Mogens Nyegaard Olesen (1998).

1 favorite vote.  

Group 3, Viticella Group.  Violet - blue, lighter stripes.  Medium, single bloom form.  Early summer to early autumn.  USDA zone 2a and warmer.  Height of 8' 2" to 11½' (250 to 350 cm).   Krister Cedergren (1991).

1 favorite vote.  Average rating: EXCELLENT.  

Early Large Flowered, Group 2.  Deep blue, yellow anthers.  Very large, single bloom form.  Late spring to early summer, late summer to early autumn.  USDA zone 6a and warmer.  Height of 6' 7" to 8' 2" (200 to 250 cm).   Raymond J. Evison (1997), Mogens Nyegaard Olesen (1997).

1 favorite vote.  

Group 3, Large-flowered, Late.  Deep blue, violet shading, white center.  Single bloom form.  Late summer to late autumn.  USDA zone 4b through 9b.  Height of 10' to 12' (305 to 365 cm).   George JACKMAN & Son (1910).

1 favorite vote.  

Late Large Flowered.  Soft mauve or blue with deep violet bands.  Very large, single bloom form.  Late spring to early summer, early autumn.  USDA zone 2a and warmer.  Height of 8' 2" to 9' 10" (250 to 300 cm).   Moser et fils (1896).

1 favorite vote.  

Group 3, Late Large Flowered.  Lilac - blue, purple anthers.  Very large, single bloom form.  Late spring to midautumn.  USDA zone 4a through 9a.  Height of up to 6' (up to 185 cm).   Raymond J. Evison (2010), Mogens Nyegaard Olesen (2010).

1 favorite vote.  

Group 2, Viticella Group.  Mauve, purple anthers.  Large, single bloom form.  Early to midsummer.  
Height: 4'11" to 6'7" (150 to 200cm).   Raymond J. Evison (1998), Mogens Nyegaard Olesen (1998).

1 favorite vote.  

Group 3, Late, Small-flowered, Viticella Group.  Blue, red anthers.  Single bloom form.  Midsummer to early autumn.  USDA zone 3b through 9b.  Height of 8' to 10' (245 to 305 cm).   Brother Stefan Franczak (1984).

1 favorite vote.  Average rating: EXCELLENT.  

Large-flowered, Late.  Mauve.  Single, ruffled edge, semi-nodding, veined bloom form.  Early summer to early autumn.  USDA zone 4b through 9b.  Height of 6' to 8' (185 to 245 cm).   Alister Keay.

1 favorite vote.  

Late Large Flowered.  Lavender - blue.  Large, single bloom form.  Early summer to early autumn.  USDA zone 4b through 9b.  Height of up to 12' (up to 365 cm).   B. Droog (1874).

1 favorite vote.  Average rating: EXCELLENT.  

Late Large Flowered.  Lavender - blue, red shading, cream stamens.  Single, star-shaped bloom form.  Midsummer to early autumn.  Height of 4' 11" to 6' 7" (150 to 200 cm).   Uno Kivistik (1986), Aili Kivistik (1986).

1 favorite vote.  

Group 3, Late Large Flowered.  Light purple, lighter stripes.  Small to medium, single bloom form.  Midsummer to early autumn.  USDA zone 2a and warmer.  Height of 6' 7" to 9' 10" (200 to 300 cm).   Uno Kivistik (1981).

1 favorite vote.  

Early Large Flowered, Group 2.  Blue, light blue streaks, light yellow anthers.  Large, single bloom form.  Early summer to early autumn.  Height of 4' 11" to 6' 7" (150 to 200 cm).   Aili Kivistik (1985), Uno Kivistik (1985).

1 favorite vote.