Group 2, Large-flowered, Late.  Blue.  Single bloom form.  USDA zone 4b through 9b.  Height of up to 6½' (up to 200 cm).   Magnus Johnson (1952).

2 favorite votes.  

Group 3, Large-flowered, Late.  White.  Large, single bloom form.  Early to midsummer.  USDA zone 3b through 9b.  Height of 6' to 8' (185 to 245 cm).   Uno Kivistik (1982).

2 favorite votes.  

Atragene Group, Early Small Flowered, Group 1.  Pink.  Single, bell-shaped, nodding bloom form.  Late spring to early summer.  USDA zone 3b through 9b.  Height of 8' to 10' (245 to 305 cm).   Magnus Johnson (1950).

2 favorite votes.  

Group 2, Species.  Cream.  Early summer to early autumn.  USDA zone 2a and warmer.   Raymond J. Evison (1998).

2 favorite votes.  

Early Small Flowered, Evergreen, Group 1, Species.  White.  Strong fragrance.  Single, bell-shaped, nodding bloom form.  Early-to-midspring.  USDA zone 7b through 9b.  Height of up to 20' (up to 610 cm).   Unknown in China (1889).

2 favorite votes.  

Group 3, Herbaceous Group.  Deep blue.  Mild fragrance.  Small, bell-shaped bloom form.  Early summer to early autumn.  Height of 32" to 4' 11" (80 to 150 cm).   Friedrich Manfred Westphal (2005).

2 favorite votes.  

Early Small Flowered, Evergreen.  White, lilac edges.  Nodding bloom form.  Midwinter to early spring.  USDA zone 8b through 9b.  Height of 10' to 12' (305 to 365 cm).   Unknown (1786).

2 favorite votes.  

Group 3, Herbaceous Group, Late, Small-flowered.  White.  Strong fragrance.  Single bloom form.  Midsummer to early autumn.  USDA zone 5b through 9b.  Height of 4' to 7' (120 to 215 cm).   Dr. Frank L. Skinner (1962).

2 favorite votes.  

Group 3, Species, Tangutica Group.  Purple, brown shading.  Small, single, bell-shaped, nodding bloom form.  Midsummer to early autumn.  Height of 9' 10" to 13' 1" (300 to 400 cm).  

2 favorite votes.  

Group 3, Late, Small-flowered, Viticella Group.  Mauve.  Single, bell-shaped bloom form.  Midsummer to early autumn.  USDA zone 2a and warmer.  

2 favorite votes.  

Alpina Group, Atragene Group, Early Small Flowered, Group 1.  Blue.  Semi-double, nodding bloom form.  Mid-to-late spring.  USDA zone 3b through 9b.  Height of 6' to 10' (185 to 305 cm).   Magnus Johnson (1950).

2 favorite votes.  

Group 3, Viticella Group.  Violet, lighter stripes, white anthers.  Small, single bloom form.  Early to late spring.  Height of 8' 2" to 9' 10" (250 to 300 cm).   Ton Hannink (2011).

2 favorite votes.  

Early Large Flowered, Group 2.  Light blue, light green edges, ages to lighter .  None / no fragrance.  Small to medium, semi-double to double bloom form.  Early-to-late summer.  USDA zone 5a and warmer.  Height of 4' 11" to 6' 7" (150 to 200 cm).  Width of up to 39" (up to 100 cm). Szczepan Marczynski (1999).

2 favorite votes.  

Large-flowered, Late.  Blue, darker center.  Single bloom form.  Mid-to-late summer.  USDA zone 4b through 9b.  Height of 8' to 12' (245 to 365 cm).   Beskaravainaja / Бескаравайная, Volosenko-Valenis.

2 favorite votes.  

Group 2, Late Large Flowered.  Light blue, violet shading, darker stripes, light yellow anthers.  Medium, single bloom form.  Midsummer to early autumn.  USDA zone 2a and warmer.  Height of 4' 11" to 6' 7" (150 to 200 cm).   Uno Kivistik (1981).

2 favorite votes.  

USDA zone 2a and warmer.  

2 favorite votes.  

Early Small Flowered, Evergreen, Group 1.  White.  Single, bell-shaped, nodding bloom form.  USDA zone 7b through 9b.  Height of 14' to 20' (425 to 610 cm).   Robin Savill (1992).

2 favorite votes.  

Group 3, Late Large Flowered.  Violet, lighter stripes, light yellow anthers.  Medium to large, single bloom form.  Midsummer to early autumn.  USDA zone 4b through 9b.  Height of 9' 10" to 13' 1" (300 to 400 cm).   A.N. Volosenko-Valenis (1962).

2 favorite votes.  

Group 1.  USDA zone 4b through 9b.  

2 favorite votes.  

USDA zone 2a and warmer.  

2 favorite votes.  

Herbaceous Group, Late Large Flowered.  Lilac, blue shading.  Small, hyacinth-shaped, star-shaped bloom form.   Victor Lemoine (1900).

2 favorite votes.  

Herbaceous Group.   Victor Lemoine (1887).

2 favorite votes.  

Early, Evergreen, Group 1, Small-flowered.  Light green, pink anthers, ages to cream .  Moderate fragrance.  Medium, single bloom form.  Late spring to early summer.  USDA zone 2a and warmer.  Height of 16' 5" to 23' (500 to 700 cm).   Arthur Ericson (1994).

2 favorite votes.  

Early Large Flowered.  Pink, mauve shading, darker center.  Single, overlapping bloom form.  Mid-to-late spring, late summer.  USDA zone 4b through 9b.  Height of 6' to 8' (185 to 245 cm).   Unknown.

2 favorite votes.