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 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, 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.  

Species.  White to mauve.  White, cream, pink, lilac or mauve.  Moderate fragrance.  Small, nodding bloom form.  Midwinter to early spring.  

2 favorite votes.  

USDA zone 2a and warmer.  

2 favorite votes.  

Group 3, Herbaceous Group.  Violet - blue, yellow anthers.  Small, single, bell-shaped, nodding bloom form.  Midsummer to early autumn.  USDA zone 4a through 9a.  Height of 4' 11" to 6' 7" (150 to 200 cm).   Raymond J. Evison (1998), Mogens Nyegaard Olesen (1998).

2 favorite votes.  

Viticella Group.  Blue.  Double bloom form.   Unknown (1665).

2 favorite votes.  

Alpina Group, Atragene Group, Early Small Flowered, Group 1.  Blue.  Single, nodding bloom form.  Mid-to-late spring.  USDA zone 3b through 9b.  Height of 6½' to 10' (200 to 305 cm).   Ernest Markham (1937).

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.  

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).

2 favorite votes.  

Early, Small-flowered.  Pink.  USDA zone 2a and warmer.  

2 favorite votes.  

USDA zone 2a and warmer.  

2 favorite votes.  

Group 3, Herbaceous Group.  White, lavender shading.  Moderate fragrance.  Twisted petals bloom form.  Early summer to early autumn.  Height of up to 39" (up to 100 cm).   Hiroshi Hayakawa / Akakawa (1991).

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.  

Atragene Group, Early Small Flowered, Group 1, Macropetala Group.  Blue.  Semi-double, bell-shaped, nodding bloom form.  Mid-to-late spring.  USDA zone 3b through 9b.  Height of 8' to 10' (245 to 305 cm).   Washfield Nursery (1966).

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, Group 2.  Lavender, silver(y) streaks, yellow anthers.  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).   George JACKMAN & Son (1912).

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.