Shrub for sun, mostly sun, mostly shade, dappled shade in zone 6a-9b. Red flowers. Up to 4 x 4 feet Also known as Azalea x 'Vuyk's Johanna', Azalea x 'Johanna', Rhododendron x 'Vuyk's Johanna', Rhododendron 'Johanna', Azalea 'Johanna'.
