Rhododendrons

Rhododendron 'President Roosevelt'
said to be a sport from 'Limbatum'
Shrub 1.2m in 10 years
Flowers: 17-24/truss, 5 lobed, strong red at margins, white to blush white in centre.
Leaves: deep green, with irregular, yellow-green variegation mostly alongside the midrib.
Inclined to revert