Rhododendron Hybrids / cultivars

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Rhododendron 'Doctor Joseph Rock'

Hybridiser:Gable, J.B.. Stewartstown, Pennsylvania, USA, 1955 (see more plants of this hybridizer)
Status:IRRC registered.
Synonyms:'1964'
'Doctor Rock'
Height
Height
The figures listed here are averages.

The exact location (altitude, sunlight, soil, climate) can influence growth considerably
in 10 years
200 cm. (7ft.)
Bloom time:early midseasonFlower:unknown
Type:elepidoteLeaves:unknown
Hardiness:
H0 = 0 C (32 F)
H1 = -7 C (20 F)
H2 = -12 C (10 F)
H3 = -15 C (5 F)
H4 = -18 C (0 F)
H5 = -24 C (-10 F)


Seed-parentPollen-parent
R. fortunei ssp discolor Houlstonii Group   Click to see more information

X'Mount Siga'   Click to see more information

R. vernicosum   Click to see more information

x?


Rhododendron 'Doctor Joseph Rock' photos

 
Photo byPeter Norris
LocationPrivate garden on Marthas Vineyard, MA USA [z 6-7]
Date12 May, 2012
See high-resolution picture




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Rhododendron cultivars   Hirsutum.info     Project started 03 June 2009