Rhododendron Species


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R. ferrugineum

SubgenusRhododendron
SectionRhododendron
SubsectionRhododendronClick to see all Rhododendron
In cultivation since: ?

First described:

Origin:

Corolla: tubular
Leaves: oblanceolate

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

Winter: evergreen
Bloomtime: late
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: purple

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
: 120 cm. (4ft.)

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

To try/see this go 'Home' (top-right).
on hirstum.info: 42
R. ferrugineum per country:
(could be a clue for heat/cold-tolerance)

Finland : 24
Denmark : 7
Netherlands : 5
Canada : 3
France : 1
Sweden : 1
Norway : 1



Natural Hybrids
halense =(ferrugineum x hirsutum)
hirsutiformum =(ferrugineum x hirsutum)
intermedium =(hirsutum x ferrugineum)

Clones / selections
'Cocinea', unknown, ,
'Glenarn', 1988, UK, No hybridizer registered, ,
'Variegatum', 1850, Whitney & Osborn, ,


Send questions, information or pictures

Rhododendron ferrugineum
Photo byHank Helm
Date
LocationRhododendron Species Botanical Garden, Federal Way, WA, USA
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Rhododendron ferrugineum
Photo byHank Helm
Date25 June, 2006
LocationHank Helm Garden, Bainbridge Island, WA, USA
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Rhododendron ferrugineum
Photo byCoen Zonneveld
Date06 May, 2002
LocationPrivate garden, Diepenveen, Netherlands
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Rhododendron ferrugineum
Photo byHarry R. Wright
Date19 May, 2007
Locationprivate garden Courtenay, British Columbia, Canada
Rhododendron ferrugineum
ferrugineum white form (rare)
Photo byCoen Zonneveld
Date17 May, 2009
LocationPrivate garden, Diepenveen, Netherlands
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Rhododendron ferrugineum
Photo byHank Helm
Date23 June, 2009
LocationHank Helm Garden, Bainbridge Island, WA, USA
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Rhododendron ferrugineum
Photo byDaniele Magro
Date11 May, 2014
LocationPrivate garden, Dorio, Lago di Como, Italia
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ferrugineum 'Variegatum'
Rhododendron ferrugineum
Photo byHan Boerrigter
Date
LocationPrivate garden, Mussel, Groningen, Netherlands
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ferrugineum 'Variegatum'
Rhododendron ferrugineum
Photo byHan Boerrigter
Date21 May, 2009
LocationPrivate garden, Mussel, Groningen, Netherlands
See high-resolution version

Parentage according the IRRC of the Royal Horticultural Society
Hybrids / cultivars where R. ferrugineum is directly involved:     show indirect inv.
'Alpine Gem Group', 1942, Thacker, T.C., , R. brachyanthum ssp brachyanthum x R. ferrugineum
'Laetevirens' (photoClick to see more information


Laetevirens
), 1902, No hybridiser registered, ,
R. minus Carolinianum Group x R. ferrugineum
'Tottenham' (photoClick to see more information


Tottenham
), 1950, No hybridiser registered, ,
R. ferrugineum x ?


Indirect involvement of R. ferrugineum in cultivars: (cultivar = direct child/cultivar of ferrugineum)
'Waltham', 1960, Ticknor, R.L., , 'Laetevirens' x R. minus Carolinianum Group
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Rhododendron Species   Hirsutum.info     Project started 03 June 2009