Supernova (August) Supernova (August) Supernova (May) Supernova Gorgeous summer colours. £3.00 Tremendous summer colours with a mix of purple, red and olive/grey with amazing watermarks. The base colour is dark red in spring. Long, narrow leaves. A very attractive variety that grows well. Gustaaf van der Steen (B) 1978 Sent in 9cm pots as growing, established plants.