Early Small Flowered, Group 1, Montana Group.  White.  Strong fragrance.  Single, cup-shaped bloom form.  Mid-to-late spring.  USDA zone 7b through 9b.  Height of up to 26' (up to 790 cm).   Colonel R.D. Alexander (1961).

5 favorite votes.  

Group 3, Late Large Flowered.  Purple, red streaks.  Medium, single, overlapping, ruffled edge bloom form.  Early summer to early autumn.  Height of 4' 11" to 6' 7" (150 to 200 cm).   L. Bakevicius (2010).

5 favorite votes.  

Early Large Flowered, Group 2.  Pink, cream shading, darker edges.  Very large, single bloom form.  Late spring to early summer, early autumn.  USDA zone 4b through 9b.  Height of 8' to 10' (245 to 305 cm).   Vince & Sylvia Denny (1996).

5 favorite votes.  

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).

5 favorite votes.  

Atragene Group, Early Small Flowered, Group 1.  White.  Single, semi-nodding bloom form.  Late spring to early summer, midsummer.  USDA zone 6b through 9b (default).  Height of 8' to 12' (245 to 365 cm).   Vince & Sylvia Denny (1987).

5 favorite votes.  

USDA zone 2a and warmer.  

5 favorite votes.  

Group 3.  Deep blue.  Moderate fragrance.  Small, hyacinth-shaped bloom form.  Midsummer to early autumn.  USDA zone 2a and warmer.  Height of up to 39" (up to 100 cm).  

5 favorite votes.  Average rating: GOOD.  

Group 3, Viticella Group.  Light blue, darker stripes, yellow stamens.  Small, single bloom form.  Early summer to late autumn.  Height of 9' 10" to 13' 1" (300 to 400 cm).   Barry Fretwell (2010).

5 favorite votes.  

Early Large Flowered.  Light pink, green shading, blue edges, brown anthers, ages to white .  Medium to large, single bloom form.   C. J. Textor (1852).

5 favorite votes.  

Early Large Flowered, Group 2.  Light purple, purple stripes.  Large, single bloom form.  Late spring to early summer, late summer to early autumn.  USDA zone 6a and warmer.   L. Bakevicius (1988).

5 favorite votes.  

Group 3, Late, Small-flowered, Viticella Group.  White.  Single, curved tip bloom form.  Mid-to-late summer.  USDA zone 4b through 9b.  Height of 8' to 10' (245 to 305 cm).   Barry Fretwell (1990).

5 favorite votes.  

Group 3.  Light yellow, purple reverse.  Small, single, bell-shaped, nodding bloom form.  Early summer to early autumn.  USDA zone 5b through 9b.  Height of 10' (305 cm).   Smith (1924), Unknown in China (1831), Unknown(Korea) (1831).

5 favorite votes.  

Group 3, Late, Small-flowered, Texensis-Viorna Group.  Red.  Small, single, tulip-shaped bloom form.  Midsummer to early autumn.  USDA zone 5b through 9b.  Height of 8' to 10' (245 to 305 cm).   Barry Fretwell (1984).

5 favorite votes.  

Large-flowered, Late.  Purple, red shading, white center.  Single bloom form.  Mid-to-late summer.  USDA zone 4b through 9b.  Height of 5' to 6' (150 to 185 cm).   Uno Kivistik (1991), Aili Kivistik (1991).

5 favorite votes.  

Early Large Flowered.  Pink.  Single, semi-double bloom form.  Late spring to early summer, late summer.  USDA zone 4b through 9b.  Height of 6' to 8' (185 to 245 cm).   George JACKMAN & Son (1873).

5 favorite votes.  

USDA zone 2a and warmer.   Unknown (1999).

5 favorite votes.  

Early Small Flowered, Group 1, Montana Group.  Pink.  Vanilla fragrance.  Single bloom form.  Late spring to early summer.  USDA zone 6b through 9b (default).  Height of 20' to 30' (610 to 915 cm).   George JACKMAN & Son (1950).

5 favorite votes.  

Group 3, Tangutica Group.  Yellow, ages to light brown .  Single, bell-shaped bloom form.  Midsummer to midautumn.  Height of 25' to 33' 4" (760 to 1015 cm).   Friedrich Manfred Westphal (1996).

5 favorite votes.  

Group 3, Late Large Flowered.  Dark purple, dark red shading, light yellow anthers.  Very large, single bloom form.  Midsummer to early autumn.   George JACKMAN & Son (1858).

5 favorite votes.  

Early Large Flowered, Group 2.  Lavender, light pink stripes, light brown anthers.  Medium to large, single bloom form.  Late spring to early summer, late summer to early autumn.  USDA zone 2a and warmer.  Height of up to 6' 7" (up to 200 cm).   Uno Kivistik (1982).

5 favorite votes.  

Early Large Flowered.  Mauve, pink center.  Single, overlapping, ruffled edge, twisted petals bloom form.  Late spring to early summer, early autumn.  USDA zone 4b through 9b.  Height of 8' to 10' (245 to 305 cm).   Bees of Chester (1957).

5 favorite votes.  

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

5 favorite votes.  

Tangutica Group.  Yellow.  Small, single bloom form.  Early to late autumn.  Height of 13' 1" to 16' 5" (400 to 500 cm).   Wim Snoeijer (1998).

5 favorite votes.  

Early Large Flowered.  Pink, mauve shading.  Single, semi-double bloom form.  Late spring to early summer, late summer.  USDA zone 4b through 9b.  Height of 6' to 10' (185 to 305 cm).   Walter Pennell (1974).

5 favorite votes.