Rhododendron Species


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R. keysii

SubgenusRhododendron
SectionRhododendron
SubsectionCinnabarinaClick to see all Cinnabarina
Synonyms
R. keysii var unicolor
In cultivation since: 1851

First described: 1855, (Nutt.
Thomas Nuttall
(1786-1859)
England, Yorkshire
Botanical-short: Nutt.
)

Origin: Bhutan, Arunachal Pradesh and S. TIbet 2400-3700 meter

Corolla: unknown
Leaves: unknown

Habit: terrestrial
epiphytic = living on dead organic material (decaying trees f.i)
terrestrial = in soil (like in your garden)

Winter: evergreen
Bloomtime: late midseason
Hardiness: H3
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)


Predominant color: orange

Height
Height
The figures listed here are the observed size in the natural environment.

The exact location (altitude, sunlight, soil, climate) can influence growth considerably
: 500 cm. (17ft.)

Registered
In 'Your Garden' you can administrate
your rhododendrons.

To try/see this go 'Home' (top-right).
on hirstum.info: 12
R. keysii per country:
(could be a clue for heat/cold-tolerance)

Netherlands : 8
United States : 2
Canada : 1
France : 1



Clones / selections
'Unicolor', unknown, ,


Send questions, information or pictures

Rhododendron keysii
Photo byEverard Daniel
Date09 May, 2004
LocationLeonardslee/Loder Plants, Sussex, UK
See high-resolution version
Rhododendron keysii
Photo byHank Helm
Date08 May, 2013
LocationHank Helm Garden, Bainbridge Island, WA, USA
See high-resolution version
Rhododendron keysii
Photo byHank Helm
Date08 May, 2013
LocationHank Helm Garden, Bainbridge Island, WA, USA
See high-resolution version
Rhododendron keysii
Keith Rushford 973
Photo byEverard Daniel
Date31 May, 2003
LocationNymans Gardens, Sussex UK
See high-resolution version
Rhododendron keysii
Photo byNursery azaleatuin.be
Date
LocationKruishoutem, Belgium
Rhododendron keysii
Photo byHank Helm
Date19 May, 2013
LocationHank Helm Garden, Bainbridge Island, WA, USA
See high-resolution version
Rhododendron keysii
Photo byHank Helm
Date10 April, 2013
LocationHank Helm Garden, Bainbridge Island, WA, USA
See high-resolution version
Rhododendron keysii
Photo byHank Helm
Date13 July, 2012
LocationHank Helm Garden, Bainbridge Island, WA, USA
See high-resolution version




Parentage according the IRRC of the Royal Horticultural Society
Hybrids / cultivars where R. keysii is directly involved:     show indirect inv.
'Amkeys Group', 1926, Magor, E.J.P., Lamellan, St. Tudy, Cornwall, EnglandR. ambiguum x R. keysii
'Cinnkeys' (photoClick to see more information


Cinnkeys
), 1917, Magor, E.J.P., Lamellan, St. Tudy, Cornwall, England
R. cinnabarinum ssp cinnabarinum x R. keysii

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Rhododendron Species   Hirsutum.info     Project started 03 June 2009