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. Hardy Species Survey Responses - D-L
Rhododendron fortunei ssp. discolor
Picture by S & J Perkins
Rhododendron fortunei ssp. discolor in Westport Point, MA

Species Type Greer Others Group Grower Zone Years Still Flowered? Healthy? Comment
    °F °F Rating     Owned Owned?      

dauricum Lepidote -25 -15 A Bensley 5B 2 Y Y Y
  Carlhian 5B 15 Y Y Y
  Clark 5B 14 Y Y Y Madison' (14 yrs) and wild type (12 yrs)
  Perkins 5B 11 Y Y Y 3 cultivars Perkins' Rating: A

decorum Elepidote 0 0 C de Burlo 6A 12 Y Y Y
  Huie 7A 3 Several plants

degronianum Elepidote A Blanchette 5A 20 Y Y Y heptamerum
  Gamlin 5A 18 Y Y Y heptamerum
  Bensley 5B 12 Y Y Y ssp yakushimanum var yakushimanum. Flowers sparse (12 yrs) Also, ssp heptamerum var heptamerum (6 yrs)
  Clark 5B 16 Y Y Y var. degronianum
  Clark 5B 14 Y Y Y
  Perkins 5B 9 Y Y Y 5 cultivars Perkins' Rating: A
  Perkins 5B 10 Y Y Y 4 plants Perkins' Rating: A
  de Burlo 6A 8 Y Y Y heptamerum
  Wrightington 6A 14 Y Y Y heptamerum
  Forrest 6B 2 N N N heptamerum. Pland died.
  Coleman 6B 8 Y Y Y heptamerum

dichroanthum Elepidote -5 0 C Forrest 6B 2 Y N Y
  Huie 7A 2 ssp. scyphocalyx

fastigiatum Lepidote -15 -5 B Wieczoreck 4B hybrids Ramapo & Purple Gem-neither hardy to -25- only -20
  Blanchette 5A 15 Y Y Y
  Clark 5B 7 N Y N too hot & dry in summer
  Brooks 5B 11 Y Y Y
  Jessen 5B 6 Y Y blooms after -15
  Perkins 5B 8 Y Y Y 2 plants Perkins' Rating: B
  Wrightington 6A N Y Y
  de Burlo 6A 11 Y Y Y
  Hill 7A 4 N N too much sun- but not started in playpen

ferrugineum Lepidote -15 -10 B Blanchette 5A 3 N N
  Jessen 5B 4 N Y N
  Mezitt 5B 10 N Y N
  Brooks 5B 7 Y N Y
  Bruso 5B 4 Y N Y From seed. Slow growing, but healthy and doing well.
  Perkins 5B 9 Y Y Y 2 plants Perkins' Rating: B
  Wrightington 6A 10 Y Y Y
  Hill 7A 10 Y Y lots of sun- little wind resembles R. kotschyi

flammeum Deciduous AZ -15 -5 C Brooks 5B 8 N Y N
  Perkins 5B 8 Y Y Y Perkins' Rating: B
  Huie 7A 9 Two plants

flavidum Lepidote -10 -5 C Huie 7A 6 var. flavidum

forrestii Elepidote 0 -5 C Perkins 5B 3 N N N Needs snow cover Perkins' Rating: D

fortunei Elepidote -15 A Blanchette 5A 15 Y Y N
  Bensley 5B 8 Y N Y Preferentially grazed by deer; has a flower bud
  Bruso 5B 6 Y N Y Beautiful foliage. Deer love it.
  Carlhian 5B 10 Y Y` Y
  Taylor 5B 30 Y Y not entirely bud hardy
  de Burlo 6A 8 Y N Y
  Donovan 6A 5 Y N
  Steele 6A 36 Y Y 4 different ones- some hardier
  Albrecht 6B 11 Y Y from Dean Barber-beautiful

fragariiflorum Lepidote -5 -5 C Perkins 5B 4 N N N Never flourished Perkins' Rating: C

groenlandicum Lepidote -30 B Bill 6 Y Y Y Blooms every year and is lovely.
  Gamlin 5A 15 Y Y Y
  Bensley 5B 4 N Y
  Brooks 5B 11 Y Y N
  Clark 5B 18 Y Y Y
  Mezitt 5B 25 Y Y Y
  Perkins 5B 7 Y Y Y Perkins' Rating: A
  Hill 7A 25 Y Y Y Compactum from AA. Blooms mid-May, handsome.

haematodes Elepidote -5 -5 C Perkins 5B 4 Y N Y Perkins' Rating: C

hanceanum Lepidote 0 -5 C Perkins 5B 2 N N N Never flourished Perkins' Rating: D

heliolepis Lepidote -5 0 C Perkins 5B 6 Y N Y Perkins' Rating: D

hippophaeoides Lepidote -25 B Hoferova 5 N Y
  Meltzer 12 Y Y needs a lot of humidity through year
  Blanchette 5A 5 N Y
  Vickers 5A 12 Y Y withstood -25°
  Perry 5B 2 N died after drought- root competition from pines
  Bensley 5B 7 Y Y Y Flowers first time this year in July!
  Perkins 5B 9 Y Y Y 2 cultivars Perkins' Rating: B
  Donovan 6A 5 N Y very heat sensitive>80° to phytophthera
  Sheridan 6B 5 Y Y

hirsutum Lepidote -15 -5 B Brooks 5B 10 Y Y Y
  Perkins 5B 9 Y Y Y 2 cultivars Perkins' Rating: B
  Wrightington 6A 4 Y Y Y

hyperythrum Elepidote -15 -25 A Wilde 4A Y Died at -26° in a mulched pot.
  Gamlin 5A 6 Y N Y
  Bensley 5B 5 Y N Y
  Brooks 5B 8 Y Y Y
  Bruso 5B 4 Y N N 4 y.o. plant died after showing poor growth, due to (mechanical?) damage to stem. Several 2 y.o. plants grown from seed are doing well.
  Clark 5B 14 Y Y Y
  Perkins 5B 7 Y N Y 4 plants Perkins' Rating: C
  Wrightington 6A 8 Y Y Y
  Huie 7A 14

impeditum Lepidote -15 -5 B ------ -- Some plants formerly species litangense.
  Hagner 5A 10 N Y N Flowered occasionally. Died in Winter of 1996-97.
  Blanchette 5A 15 Y Y Y
  Gamlin 5A 8 Y Y Y
  Mezitt 5B 20 N Y N
  Bensley 5B 6 Y N N Losing ground
  Brooks 5B 8 Y Y Y Heat intolerant.
  Carlhian 5B 10 Y Y Y roots eaten by voles repeatedly
  Clark 5B 18 Y Y Y
  Perkins 5B 13 Y Y Y 3 cultivars Perkins' Rating: B
  Magoun 6A 25 N Y N
  Wrightington 6A 3 Y Y Y

insigne Elepidote 0 -5 C de Burlo 6A 2 Y N N
  Wrightington 6A 3 Y N Y RSF 75/110

intricatum Lepidote -15 -5 C Bensley 5B 2 N N Lost ground and died rapidly
  Perkins 5B 5 N N N Hates drought Perkins' Rating: C
  Clark 5B 14 Y Y Y always summer blooms

kaempferi Evergreen AZ -5 -15 A Blanchette 5A 3 N Y Y
  Clark 5B 4 Y N Y selection 'Dorset'
  Mezitt 5B 50 Y Y Y
  Perkins 5B 9 Y Y Y 3 cultivars Perkins' Rating: A. Thrives and blooms in deep shade.
  Magoun 6A 25 N Y
  Wrightington 6A 12 Y Y Y
  Huie 7A 9 2 plants

keiskei Lepidote -5 -10 A Birkrem 4B 10 Y Y letter
  Blanchette 5A 25 Y Y Y
  Gamlin 5A 12 Y Y Y
  Hagner 5A 8 Y Y Y
  Nichols 5A 10 Y Y 1300', Yaku Fairy-18° good air drainage- usually covered w. fir boughs
  Mezitt 5B 20 N Y N
  Andrews 5B 7 Y Y hasn't grown much
  Brooks 5B 16 Y Y Y
  Clark 5B 22 Y Y Y
  Perkins 5B 10 Y Y Y 3 cultivars Perkins' Rating: B
  Silverman 6A 3 N Y 95 drought did it in.
  de Burlo 6A 16 Y Y Y
  Magoun 6A 7 Y Y Y
  Steele 6A 33 Y Y several forms. see letter
  Wrightington 6A 15 Y Y Y
  Coleman 6B 13 Y Y Y
  Laxon 6B 8 Y Y last of 3 not thriving
  Huie 7A 14 2 plants
  Atwater 7A 10 Y Y variable results w. different plants
  Hickey 7A 16 Y Y dwarf and tall forms- both very floriforous

kiusianum Evergreen AZ -10 A Nichols 5A 15 Y Y consistent bloomer
  Andrews 5B 6 Y Y white and Komo Kulshan
  Clark 5B 15 Y Y Y Nomoto', 'Komo Kulshan', album
  Perkins 5B 10 Y Y Y 10 cultivars Perkins' Rating: A
  Perry 5B 6 Y Y lost 1/2 branches last winter
  Silverman 6A 2 Y N suffered from drought in full sun deer love it
  Forrest 6B 2 Y Y Y Benisuzume
  Hill 7A 6 Y Y 11 forms- see letter

kiyosumense Evergreen AZ -10 -5 C Gamlin 5A 5 Y N Y

latoucheae Elepidote -10 10 B Hagner 5A 8 Y Y Y Blooms occasionally.
  Magoun 6A 15 Y Y Y
  Wrightington 6A 15 Y Y Y

ledebourii Lepidote -25 C Huie 7A 5

lepidotum Lepidote -5 -5 C Perkins 5B 4 Y N N Not Plant Hardy Perkins' Rating: D

longesquamatum Elepidote -15 C Perkins 5B 4 Y N Y Perkins' Rating: C
  Wrightington 6A 2 Y N Y

luteum Deciduous AZ -15 -5 B Gamlin 5A 10 Y ? ?
  Brooks 5B 9 Y Y Y Original plant died. This rating is for a second plant.
  Bruso 5B 4 Y N Y
  de Burlo 6A 2 Y N Y
  Huie 7A 11 4 plants


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