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Recommended citation'Rhododendron × edgarianum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-x-edgarianum/). Accessed 2022-05-27.
A hybrid of R. nivale Hook.f. subsp. boreale M.N.Pilipson & Philipson (Subsect. Lapponica). It is occasionally seen in cultivation. Royal Horticultural Society (1997)
RHS Hardiness Rating H6
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