Rhododendrons

Rhododendron 'Arctic Tern'
trichostomum hybrid
HC 1982; AM 1989; AM 1984 (reported to be a ledum x rhododendron hybrid, hence a Ledodendron)
AGM 2012
H5
Flowers: 20/ball-shaped crowded truss, open funnel-shaped, 5-8 x 10-15mm, with wavy edged lobes, pure white, slightly tinged green in throat.
Foliage: 22-35 x 5-7mm, dark dull green.
Shrub up to at least 1.2 x 1.4m.