R. thayerianum

Species

Subgenus	Hymenanthes
Section	Pontica
Subsection	Argyrophylla
Introduced	1910
First Described	1913 ( Rehder, E.H. Wilson )
Origin	Central Sichuan
Epiphytic/Terrestrial	terrestrial
Mature Wild Height	300 cm. (10ft.)
Bloom Time	late
Flower	funnel-campanulate
Flower Color	white
Fragrance	?
Leaves	narrowly oblanceolate
Leaf persistence	Evergreen
Minimum Hardiness	-15 C (5 F)
Additional Hardiness Info	H5

Title R. thayerianum Photo By Thatrhodylady Date Taken June 13, 2026 Location Rhododendron Species Botanical Garden License CC BY 4.0 Attribution Sizes small 648 x 1152, 46 KB medium 1350 x 2400, 252 KB Full 2296 x 4080, 2.7 MB Description R. thayerianum close shot on flower.
Title R. thayerianum Photo By Thatrhodylady Date Taken June 13, 2026 Location Rhododendron Species Botanical Garden License CC BY 4.0 Attribution Sizes small 648 x 1152, 76 KB medium 1350 x 2400, 412 KB Full 2296 x 4080, 3 MB Description R. thayerianum flowers opening, and leaf bud at the bottom of photo.
Title R. thayerianum Photo By Thatrhodylady Date Taken June 13, 2026 Location Rhododendron Species Botanical Garden License CC BY 4.0 Attribution Sizes small 648 x 1152, 64 KB medium 1350 x 2400, 337 KB Full 2296 x 4080, 3 MB Description R. thayerianum flower just opened, pollen on the anthers.
Title thayerianum Photo By Jens Birck Date Taken June 10, 2005 Location Kastrup, Denmark License Copyright, Jens Birck. Sizes small medium
Title thayerianum Photo By Coen Zonneveld Date Taken Location Diepenveen, Netherlands License Copyright, Coen Zonneveld. Sizes small medium
Title thayerianum Photo By Coen Zonneveld Date Taken Location Diepenveen, Netherlands License Copyright, Coen Zonneveld. Sizes small
Title thayerianum Photo By Peter Norris Date Taken July 23, 2012 Location Private garden on Martha’s Vineyard, MA USA [z 6-7] License Copyright, Peter Norris. Sizes small medium Description obtained from RSBG
Title thayerianum Photo By Jens Birck Date Taken Location License Copyright, Jens Birck. Sizes small
Title thayerianum Photo By Garth Wedemire Date Taken April 11, 2010 Location University of Britsh Columbia, Vancouver, Canada License CC BY 4.0 Attribution Sizes small medium
Title thayerianum Photo By Garth Wedemire Date Taken April 11, 2010 Location University of Britsh Columbia, Vancouver, Canada License CC BY 4.0 Attribution Sizes small medium
Title thayerianum Photo By Herman Van Ree Date Taken October 26, 2009 Location Arboretum Belmonte, Wageningen, Netherlands License Copyright, Herman Van Ree. Sizes small Tag
Title thayerianum Photo By Herman Van Ree Date Taken October 26, 2009 Location Arboretum Belmonte, Wageningen, Netherlands License Copyright, Herman Van Ree. Sizes small