'Sarma'
Flowering time: end of May-end of June
Flowers:
flower buds are rose,
after flourishing flowers are white, with rose midrib, with expressive yellow-orange spots on the upper corolla
Leaves: deciduous
Height: 2 m (in 20 years)
Width: 1.7 m (in 20 years)
Hardiness: good (-25°C)
Growing: In sun or partial shade, in acidic (pH 4.5-5.5), moderately moist, loose, rich in humus and permeable soil