Archive entry 15.01.12
Archive entry 13.12.15
28th January 2012
Ellen is the grex name for the hybrids between D.kingianum and D.tetragonum. So far it has grown in the same conditions as D.kingianum
but I haven't yet tested it for cold tolerance.
2nd January 2016
8th September 2018
Raised by W. Schmidt and registered in 1928.