Relative small species with strong hairy leaves. The size after 10 years is 125 cm. The flower colour is white with a lilac heart. This plant is hardy.The flowering period is June - August.
Location of the plant shown in the first picture : tuin M. Foster, Ivy Hatch (GB)
Date taken : 21.07.2002
Other information on the picture : aspera robusta f.longipes
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