USDA zone 2a and warmer.  

3 favorite votes.  

Group 3, Late Large Flowered.  Lilac, rose-pink stripes.  Very large, single, ruffled edge bloom form.  Late summer to midautumn.  USDA zone 6a and warmer.  Height of 8' 2" to 9' 10" (250 to 300 cm).   Brother Stefan Franczak (1978).

3 favorite votes.  

Viticella Group.  Light blue, lavender shading.  Large, single bloom form.   Victor Lemoine (1883).

3 favorite votes.  

USDA zone 2a and warmer.   Szczepan Marczynski (2004).

3 favorite votes.  

Group 3, Herbaceous Group.  White, yellow stamens, white anthers.  Moderate, almond fragrance.  Small, curved tip, overlapping bloom form.  Early summer to early autumn.  Height of up to 39" (up to 100 cm).   Everett Leeds (2006).

2 favorite votes.  

Group 3, Herbaceous Group, Late, Small-flowered, Species.  Single, nodding, urn-shaped bloom form.  Early to midsummer.  USDA zone 5b through 9b.  Height of 2' (60 cm).   Unknown American origin.

2 favorite votes.  

Herbaceous Group.  Blue.  Strong fragrance.  USDA zone 2a and warmer.  Height of 3' (90 cm).   Kazushige Ozawa.

2 favorite votes.  

Early Large Flowered, Group 2.  Salmon-pink, light purple stripes, deep yellow anthers.  Medium, single bloom form.  Early summer to early autumn.  USDA zone 4b through 11.  Height of 6' to 8' (185 to 245 cm).   Takashi Watanabe (1994).

2 favorite votes.  

Early Large Flowered, Group 2.  White, light green stripes, red stamens.  Moderate fragrance.  Large, single, star-shaped bloom form.  Late spring to early summer, early autumn.  Height of 6' 7" to 9' 10" (200 to 300 cm).   Fred Wein, Sr. (2001).

2 favorite votes.  

Early Large Flowered.  Mauve.  Single, curved tip bloom form.  Late spring to early summer, late summer.  USDA zone 4b through 9b.  Height of 7' to 10' (215 to 305 cm).   Unknown (1990).

2 favorite votes.  

USDA zone 2a and warmer.  

2 favorite votes.  

Herbaceous Group.  Purple.  Single, bell-shaped bloom form.  Early summer to early autumn.  USDA zone 2a and warmer.  Height of up to 39" (up to 100 cm).   Hans Vermeulen (1999).

2 favorite votes.  

Early Large Flowered.  Blue.  Single, double bloom form.  Late spring to early summer, late summer.  USDA zone 4b through 9b.  Height of 8' to 10' (245 to 305 cm).   Derek Mills (1985).

2 favorite votes.  

Early Large Flowered, Group 2.  Deep blue, purple shading, light yellow anthers.  Single bloom form.  Height of 8' 2" to 9' 10" (250 to 300 cm).   Peer K. Sorensen (2002).

2 favorite votes.  

Group 3, Late, Small-flowered, Tangutica Group.  Single, nodding bloom form.  Late spring to early autumn.  USDA zone 4b through 9b.  Height of 7' (215 cm).   Boskoop Research Station (1988).

2 favorite votes.  

Large-flowered, Late.  Violet.  USDA zone 2a and warmer.  

2 favorite votes.  

USDA zone 2a and warmer.  

2 favorite votes.  

Early Large Flowered.  Violet, yellow anthers.  Double, overlapping, veined bloom form.  Early summer to early autumn.  USDA zone 4b through 9b.  Height of 6' to 8' (185 to 245 cm).   Percival Thomas James (1960).

2 favorite votes.  

Early Small Flowered, Group 1, Montana Group.  White.  Semi-double bloom form.  Mid-to-late spring.  USDA zone 7b through 9b.  Height of up to 20' (up to 610 cm).   Hans R. Horn-Gfeller (1980).

2 favorite votes.  

USDA zone 2a and warmer.  

2 favorite votes.  

Early Large Flowered.  Lavender and crimson, lighter center.  Single bloom form.  Mid-to-late spring, late summer.  USDA zone 2a and warmer.  Height of 8' to 10' (245 to 305 cm).   Walter Pennell (1962).

2 favorite votes.  

Group 3, Viticella Group.  Violet, purple center.  Small to medium, single bloom form.  Early summer to early autumn.  Height of 4' 11" to 6' 7" (150 to 200 cm).   Wim Snoeijer (2000).

2 favorite votes.  

Alpina Group, Atragene Group, Early Small Flowered, Group 1.  Purple.  Single, bell-shaped, nodding bloom form.  Mid-to-late spring.  USDA zone 3b through 9b.  Height of 8' to 10' (245 to 305 cm).   Tage Lundell (1970).

2 favorite votes.  

Early Small Flowered, Group 1, Montana Group.  Pink.  Vanilla fragrance.  Single, saucer-shaped bloom form.  Late spring to early summer.  USDA zone 7b through 9b.  Height of 29' (885 cm).   Unknown (1950).

2 favorite votes.