USDA zone 2a and warmer.  

7 favorite votes.  

Early Large Flowered, Group 2.  Blue, white stripes, cream stamens.  Medium to large, single bloom form.  Late spring to early summer, midsummer to early autumn.  USDA zone 2a and warmer.  Height of up to 8' (up to 245 cm).   Walter Pennell (1962).

7 favorite votes.  

Early Small Flowered, Evergreen.  White.  Bell-shaped bloom form.  Early to late spring.  USDA zone 8b through 9b.  Height of 12' to 14½' (365 to 440 cm).   Unknown in Australia (1817).

7 favorite votes.  

Late Large Flowered.  Lilac, white stripes, brown anthers.  Large, single bloom form.  USDA zone 2a and warmer.   Victor Lemoine (1876).

7 favorite votes.  

Group 2, Large-flowered, Mid-season.  Blue.  Single bloom form.  Early autumn, early to midsummer.  USDA zone 4b through 9b.  Height of 6½' to 10' (200 to 305 cm).   Conrad Eriandson (1978).

7 favorite votes.  

Late, Small-flowered.  Single, bell-shaped, curved tip, semi-nodding bloom form.  Midsummer to early autumn.  USDA zone 5b through 9b.  Height of 2' to 4' (60 to 120 cm).   Unknown in China, Unknown(Mongolia).

7 favorite votes.  

Herbaceous Group, Late, Small-flowered.  Pink.  Single, bell-shaped, grooved, nodding, notched bloom form.  USDA zone 4b through 9b.  Height of 6' to 8' (185 to 245 cm).   Barry Fretwell.

7 favorite votes.  

Group 3, Late, Small-flowered, Viticella Group.  Mauve.  Bell-shaped, curved tip, ruffled edge bloom form.  Mid-to-late summer.  USDA zone 3b through 9b.  Height of 8' to 12' (245 to 365 cm).   Magnus Johnson (1956).

7 favorite votes.  

Alpina Group, Atragene Group, Early Small Flowered.  White, yellow .  Single, nodding bloom form.  Mid-to-late spring.  USDA zone 3b through 9b.  Height of 6' to 8' (185 to 245 cm).   Unknown(Europe) (1768), Unknown(Siberia) (1768).

7 favorite votes.  

Group 3, Species.  White, light yellow anthers.  Single bloom form.  Midsummer to midautumn.  Height of 11½' to 16' 5" (350 to 500 cm).  

7 favorite votes.  

Late, Small-flowered.  Brown, purple shading.  Single, nodding, veined bloom form.  Early summer to early autumn.  USDA zone 5b through 9b.  Height of 3' to 10' (90 to 305 cm).   Unknown in China (1840).

7 favorite votes.  

Group 3.  Blue.  Clusters, hyacinth-shaped, nodding bloom form.  Early summer to early autumn.  USDA zone 5b through 9b.  Height of 2' to 3' (60 to 90 cm).   Unknown in China (1837).

7 favorite votes.  

Atragene Group, Early Small Flowered.  Violet.  Single, bell-shaped, nodding, veined bloom form.  Mid-to-late spring.  USDA zone 3b through 9b.  Height of 10' (305 cm).   Unknown in China, Unknown(Japan), Unknown(Korea).

7 favorite votes.  

Unknown (1959).

7 favorite votes.  

Early Large Flowered, Group 2.  Red.  Single bloom form.  Late spring to early summer, late summer.  USDA zone 4b through 9b.  Height of 8' to 10' (245 to 305 cm).   Walter Pennell (1961).

7 favorite votes.  

Group 3, Late, Small-flowered, Viticella Group.  Blue.  Small, single, semi-nodding bloom form.  Mid-to-late summer.  USDA zone 4b through 9b.  Height of 8' to 10' (245 to 305 cm).   Brother Stefan Franczak (1989).

7 favorite votes.  

Large-flowered, Late.  Dark, rich velvety purple.  Single bloom form.  Midsummer to early autumn.  USDA zone 4b through 9b.  Height of 6' to 19' 8" (185 to 600 cm).   Thomas Cripps and Son (1876).

7 favorite votes.  

Early Small Flowered, Montana Group.  White.  Single bloom form.  Late spring.  USDA zone 6b through 9b (default).  Height of 6' to 13' (185 to 395 cm).   Ernest Wilson (1908).

7 favorite votes.  

Group 3.  Violet, yellow anthers.  Medium to large, single, twisted petals bloom form.  Late spring to early summer.  USDA zone 5a and warmer.  Height of 6' 7" to 9' 10" (200 to 300 cm).   Raymond J. Evison (1997), Mogens Nyegaard Olesen (1997).

7 favorite votes.  

Herbaceous Group.  Blue.  Single, bell-shaped, nodding bloom form.  Early summer to early autumn.  USDA zone 4b through 9b.  Height of 2' to 3' (60 to 90 cm).   Unknown(Europe) (1573).

7 favorite votes.  

Large-flowered, Late.  Dark red, violet shading.  Single, curved edge bloom form.  Late spring to late summer.  USDA zone 4b through 9b.  Height of 6' to 8' (185 to 245 cm).   Baron Veillard (1893).

7 favorite votes.  

Group 3, Viticella Group.  Purple.  Large bloom form.  Late summer to early autumn.  Height of 8' 2" to 9' 10" (250 to 300 cm).   M. I. Orlov (1969).

7 favorite votes.  

Herbaceous Group, Late, Small-flowered.  Mauve.  Single, bell-shaped, curved tip, nodding, twisted petals bloom form.  Mid-to-late summer.  USDA zone 3b through 9b.  Height of 5' to 7' (150 to 215 cm).   M.A. Beskaravainaja / Бескаравайная (1967).

7 favorite votes.  

Lemon-yellow, yellow , purple stripes / flecks / streaks.  Bell-shaped bloom form.  USDA zone 2a and warmer.  

7 favorite votes.