Hermodactylus tuberosus
By Andrewr
6 Mar, 2008
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I first saw this tuberous perennial growing wild in Crete (where it is known as the widow or black iris). It needs full sun and a well-drained position so the tuber can dry out during the summer
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According to the RHS Encyclopaedia, this one might take -15C. But I would be inclined to give it a dry mulch for extra protection if it was going to get that cold. It came through this wet winter and the previous cold one OK with me. As with many things of doubtful hardiness, drainage is the key; cold together with wet does more damage than cold but dry
6 Mar, 2008
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You've got some interesting plants. My question always is how hardy are they? Down to how many degrees below zero???
6 Mar, 2008