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R. macrophyllum

Species

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Botanical
Synonyms
R. californicum (Hook. f.)
R. washingtonianum
Synonyms R. 'California Rhododendron'
R. 'California Rosebay'
R. 'Pacific Rhododendron'
R. 'Western Rhododendron'
Subgenus Hymenanthes
Section Pontica
Subsection Pontica
In cultivation since 1850
First Described 1834 (G.Don)
Origin W. North from California to Britisch Columbia, 0-1200 meter
Habitat terrestrial
10 Year Height ?
Mature Wild Height 700 cm. (23ft.)
Bloom Time ?
Flower broadly campanulate
Predominant Colour pink
Leaves oblong
Winter Foliage evergreen
Hardiness H4
Photo By:
Susan Lightburn
Date:
08 June, 2013
Location:
Rhododendron Lake, Vancouver Island, BC, Canada
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Photo By:
Hank Helm
Date:
17 May, 2012
Location:
Hank Helm Garden, Bainbridge Island, WA, USA
Description:
macrophyllum Whidbey cutting
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Photo By:
Hank Helm
Date:
01 June, 2009
Location:
Hank Helm Garden, Bainbridge Island, WA, USA
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Photo By:
Hank Helm
Date:
18 May, 2006
Location:
Hank Helm Garden, Bainbridge Island, WA, USA
Description:
macrophyllum Barto White
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Photo By:
Dr. Stephan Bubert
Date:
29 May, 2012
Location:
Private garden, Hamburg, Germany
Description:
IJ084 RSF, planted 1993
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Photo By:
Hank Helm
Date:
Location:
Chimacum Woods Garden, Washington, USA
Description:
seedling from the form collected from Whidbey Island
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Photo By:
Hank Helm
Date:
12 May, 2007
Location:
Northern California, near the Oregon border On the highway from Crescent City to Grants Pass Oregon.
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Photo By:
Hank Helm
Date:
20 May, 2007
Location:
Oregon, near Dunes Golf Course, just outside Bandon, USA
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Photo By:
Hank Helm
Date:
20 May, 2007
Location:
Oregon, near Dunes Golf Course, just outside Bandon, USA
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Photo By:
Susan Lightburn
Date:
04 June, 2006
Location:
Rhododendron Lake, Nanoose, Vancouver Island, BC, Canada
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Photo By:
Susan Lightburn
Date:
04 June, 2006
Location:
Rhododendron Lake, Nanoose, Vancouver Island, BC, Canada
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Photo By:
Harry R. Wright
Date:
June, 2006
Location:
Rhododendron Lake, Vancouver Island, BC, Canada
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Photo By:
Susan Lightburn
Date:
28 May, 2006
Location:
Mount Elphinstone, BC, Canada
Description:
Native N. American species in its natrual habitat
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Photo By:
Garth Wedemire
Date:
18 June, 2008
Location:
Mount Elphinstone, Sunshine Coast, British Columbia, Canada
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Photo By:
Garth Wedemire
Date:
18 June, 2008
Location:
Mount Elphinstone, Sunshine Coast, British Columbia, Canada
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Photo By:
Susan Lightburn
Date:
28 May, 2006
Location:
Mount Elphinstone, BC, Canada
Photo By:
Garth Wedemire
Date:
28 May, 2006
Location:
Skagit River Valley, BC, Canda
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Photo By:
Susan Lightburn
Date:
08 June, 2013
Location:
Rhododendron Lake, Vancouver Island, BC, Canada
Hi-Resolution Version:
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Photo By:
Susan Lightburn
Date:
08 June, 2013
Location:
Rhododendron Lake, Vancouver Island, BC, Canada
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Photo By:
Hank Helm
Date:
15 May, 2007
Location:
NE of Santa Cruz and SW of Bag Basin Redwood Park in California
Description:
Isolated population probably does not exceed 50 plants. Only one known population further south.
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Photo By:
Hank Helm
Date:
15 May, 2007
Location:
NE of Santa Cruz and SW of Bag Basin Redwood Park in California
Description:
Isolated population probably does not exceed 50 plants. Only one known population further south.
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Photo By:
Hank Helm
Date:
15 May, 2007
Location:
NE of Santa Cruz and SW of Bag Basin Redwood Park in California
Description:
Isolated population probably does not exceed 50 plants. Only one known population further south.
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Photo By:
Garth Wedemire
Date:
12 July, 2005
Location:
Rhododendron Wayside in Manning Park at the Skagit River, British Columbia, Canada
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Photo By:
Garth Wedemire
Date:
28 May, 2006
Location:
Skagit River Valley, BC, Canda
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Photo By:
Garth Wedemire
Date:
12 July, 2005
Location:
Rhododendron Wayside in Manning Park at the Skagit River, British Columbia, Canada
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Photo By:
Hank Helm
Date:
Location:
in the wild, Camp Union, Washington State, USA
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Photo By:
Hank Helm
Date:
Location:
in the wild, Washington State, USA
Description:
macrophyllum Neletta
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Photo By:
Hank Helm
Date:
21 May, 2007
Location:
in the wild, Washington State, USA
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Photo By:
Hank Helm
Date:
Location:
in the wild, Washington State, USA
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Photo By:
Hank Helm
Date:
Location:
in the wild, Washington State, USA
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Photo By:
Hank Helm
Date:
27 May, 2006
Location:
in the wild, Washington State, USA
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Photo By:
Hank Helm
Date:
Location:
in the wild, Washington State, USA
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Photo By:
Hank Helm
Date:
27 May, 2006
Location:
in the wild, Washington State, USA
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Photo By:
Dick Cavender
Date:
Location:
SW Oregon a few miles from the coast and from the California boarde
Description:
The red (new) foliage probably caused by the Serpentine soil
Photo By:
Dick Cavender
Date:
Location:
SW Oregon a few miles from the coast and from the California boarde
Description:
R. macrophyllum with a witches broom
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Photo By:
Herman Van Ree
Date:
21 August, 2009
Location:
UBC Botanical Gardens, Vancouver
Photo By:
Herman Van Ree
Date:
21 August, 2009
Location:
UBC Botanical Gardens, Vancouver
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Tag:
Photo By:
Dennis McKiver
Date:
12 May, 2012
Location:
Mendocino Coast Botanical Garden, Fort Bragg, CA, USA
Description:
macrophyllum 'Albion Ridge'
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Photo By:
Dennis McKiver
Date:
14 May, 2011
Location:
Mendocino Coast Botanical Garden, Fort Bragg, CA, USA
Description:
macrophyllum 'Albion Ridge'
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Photo By:
Hank Helm
Date:
Location:
Hank Helm Garden, Bainbridge Island, WA, USA
Description:
macrophyllum 'Seven Devils'
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Photo By:
Paul & Linda Lawry
Date:
Location:
private garden Lantzville, Vancouver Island, BC, Canada
Description:
macrophyllum 'Seven Devils'
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Photo By:
Dick Cavender
Date:
Location:
Red's Rhodies, Sherwood Oregon USA
Description:
macrophyllum 'Vulcan Lake White'
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Photo By:
Dick Cavender
Date:
Location:
Red's Rhodies, Sherwood Oregon USA
Description:
macrophyllum 'Iron Mountain White #1'