R. keiskei

Species

Botanical Synonyms	R. laticostum ( Ingram ) R. subnikomontanum R. trichocalyx ( Ingram )
Subgenus	Rhododendron
Section	Rhododendron
Subsection	Triflora
Introduced	1908
First Described	1866 ( Miq. )
Origin	Japan from Yakushima to Central Japan 600-1850 meter
Epiphytic/Terrestrial	terrestrial
Mature Wild Height	250 cm. (8ft.)
Bloom Time	early midseason
Flower	widely funnel-shaped
Flower Color	yellow
Fragrance	?
Leaves	oblong-lanceolate
Leaf persistence	Evergreen
Plant Hardiness	-10 C (14 F)
Flower Bud Hardiness	?
Additional Hardiness Info	H4
Extra Information	The name 'keiskei' commemorates the Japanese botanist Ito Keisuke (1803-1900). Rh. keiskei is a very variable species. Some specimens from very high altitude are dwarf-rhododendrons like var ozawae (formerly var cordifolia) and its cultivar 'Yaku Fairy' barely 6 inches tall Taller forms can reach as much as 10 feet. There are a lot of cultivar and species names probably all about the same specimen.

Title R. keiskei Photo By Harold Fearing Location Fearing's Farm Nursery, Abbotsford, BC, Canada License CC BY-SA 4.0 Attribution Text: Harold Fearing via Rhododendra.com, CC BY-SA 4.0 Sizes small 768 x 612, 14 KB medium 1600 x 1274, 51 KB Full 2571 x 2048, 1.8 MB Description ARS-07-03
Title R. keiskei Photo By Harold Fearing Date Taken March 25, 2018 Location Fearing's Farm Nursery, Abbotsford, BC, Canada License CC BY-SA 4.0 Attribution Text: Harold Fearing via Rhododendra.com, CC BY-SA 4.0 Sizes small 768 x 558, 18 KB medium 1600 x 1162, 60 KB Full 4882 x 3544, 2.9 MB
Title R. keiskei Photo By Harold Fearing Date Taken April 9, 2018 Location Fearing's Farm Nursery, Abbotsford, BC, Canada License CC BY-SA 4.0 Attribution Text: Harold Fearing via Rhododendra.com, CC BY-SA 4.0 Sizes small 768 x 576, 24 KB medium 1600 x 1200, 79 KB Full 5324 x 3992, 3.2 MB
Title R. keiskei Photo By Harold Fearing Location Fearing's Farm Nursery, Abbotsford, BC, Canada License CC BY-SA 4.0 Attribution Text: Harold Fearing via Rhododendra.com, CC BY-SA 4.0 Sizes small 766 x 1152, 33 KB medium 1596 x 2400, 129 KB Full 3542 x 5325, 3.9 MB
Title keiskei Photo By Jim Willhite Date Taken April 14, 2012 Location Jenkins Arboretum, Devon, PA, USA License Copyright, Jim Willhite. Sizes small 768 x 576, 29 KB medium 1200 x 901, 243 KB
Title keiskei Photo By Garth Wedemire Date Taken April 16, 2005 Location Rhododendron Species Botanical Garden, Federal Way, Washington, USA License CC BY 4.0 Attribution Text: Garth Wedemire via Rhododendra.com, CC BY 4.0 Sizes small 768 x 510, 59 KB medium 1200 x 798, 219 KB
Title keiskei Photo By Jens Birck Date Taken May 15, 2006 Location Kastrup, Denmark License Copyright, Jens Birck. Sizes small
Title keiskei Photo By Hank Helm Date Taken Location Rhododendron Species Botanical Garden, Federal Way, WA, USA License Copyright, Hank Helm. Sizes small 640 x 480, 31 KB medium 640 x 480, 73 KB Description keiskei 'Yaku Fairy'
Title keiskei Photo By Everard Daniel Date Taken March 31, 2004 Location Leonardslee/Loder Plants, Sussex, UK License Copyright, Everard Daniel. Sizes small 768 x 576, 47 KB medium 1200 x 900, 223 KB
Title keiskei Photo By Jens Birck Date Taken May 4, 2000 Location Kastrup, Denmark License Copyright, Jens Birck. Sizes small 768 x 576, 93 KB medium 1200 x 900, 309 KB Description R. keiskei cw.
Title keiskei Photo By Coen Zonneveld Date Taken Location Diepenveen, Netherlands License Copyright, Coen Zonneveld. Sizes small 768 x 614, 49 KB medium 1200 x 958, 213 KB
Title keiskei Photo By Herman Van Ree Date Taken December 2, 2009 Location Nunspeet, Netherlands License Copyright, Herman Van Ree. Sizes small