R. tomentosum

Species

Botanical Synonyms	R. palustre
Synonyms	R. 'Crystal Tea' R. 'Finnmarkspors, (Norwegian)' R. 'Hudson's Bay tea' R. 'Marsh Labrador Tea' R. 'Moeraspalm, (Dutch)' R. 'Mottenkraut, (German)' R. 'Muskeegobug Aniibi (Ojibwe)' R. 'Muskeko-pukwa (Cree)' R. 'Northern Labrador Tea' R. 'Skvattram, (Swedish)' R. 'Sumpfporst, (German)' R. 'Suopursu, (Finnish)' R. 'Swamp Tea' R. 'Wild Rosemary' R. 'Wilder Rosmarin, (German)' R. 'Wish-a-ca-pucca (Chpewyan)'
Subgenus	Rhododendron
Section	Rhododendron
Subsection	Ledum
First Described	1990 ( Harmaja )
Origin	Alaska, Canada, Europe (Germany, Switzerland and Baltic countries), Asia China. 0-2000 meter
Epiphytic/Terrestrial	terrestrial
Mature Wild Height	100 cm. (3ft.)
Bloom Time	late midseason
Flower	?
Flower Color	white
Fragrance	?
Leaves	?
Leaf persistence	Evergreen
Plant Hardiness	-15 C (5 F)
Flower Bud Hardiness	?
Additional Hardiness Info	H5
Extra Information	Leaves of this plant used to be added to the beer-brewing-process in North-Germany until early 1900. It gave an extra 'arousing' effect. This practice became illegal around 1910. Due to its strong fragrance, it has also formerly been used as a natural anti-moth (for Clothing Moth) in Scandinavia. (Hence the name "Mottenkraut" in German) The genus Ledum became only recently part of the Rhododendron genus. So there are lots of 'old names' and 'wrong names'. For more information see: Ledum taxonomy, or the UBC-forum.

Title R. tomentosum 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 514, 33 KB medium 1600 x 1072, 114 KB Full 3872 x 2592, 2.4 MB
Title R. tomentosum 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 1148, 69 KB medium 1600 x 2390, 247 KB Full 2592 x 3872, 1.7 MB
Title R. tomentosum 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 978, 52 KB medium 1600 x 2038, 267 KB Full 3118 x 3971, 3.9 MB Description Seed Lot: ARS-03-110 Seed Comments: Kristian Theqvist, Finland - cw, Turku Archipelago, Finland
Title R. tomentosum 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 512 x 470, 64 KB medium 1600 x 1470, 499 KB Full 2772 x 2548, 4.9 MB Description Seed Lot: ARS-03-110 Seed Comments: Kristian Theqvist, Finland - cw, Turku Archipelago, Finland
Title R. tomentosum 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 546, 36 KB medium 1600 x 1138, 132 KB Full 3234 x 2299, 1.9 MB
Title R. tomentosum 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 1148, 38 KB medium 1600 x 2390, 278 KB Full 2592 x 3872, 3.3 MB Description Seed Lot: ARS-03-110 Seed Comments: Kristian Theqvist, Finland - cw, Turku Archipelago, Finland
Title R. tomentosum 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 524, 14 KB medium 1600 x 1092, 52 KB Full 2941 x 2006, 2 MB Description Seed Lot: ARS-08-233 Seed Comments: O.J.Larsen,Norway, RAN0025, cw Norway
Title tomentosum Photo By Steve Henning Date Taken May 4, 2003 Location Rhododendron Species Botanical Garden, Federal Way, WA, USA License Copyright, Steve Henning. Sizes small 768 x 576, 39 KB medium 1200 x 900, 155 KB
Title tomentosum Photo By unknown Date Taken Location License Copyright, unknown. Sizes small
Title tomentosum Photo By unknown Date Taken Location License Copyright, unknown. Sizes small
Title tomentosum Photo By postcard Date Taken July 8, 1913 Location Switzerland License Copyright, postcard. Sizes small Description Postcard showing Sumpfporst (German for tomentosum) in the Swiss Alps