Easter Lilies, (Lilium longiflorum), Japanese natives, are apparently adaptable to our climate here in the Sierra Foothills. Three pots of lilies, with faded blooms, given to me by a friend in May 2009, were planted on the back garden bank and then forgotten until early this summer when the stems popped up from among the yarrow.  Then first week of August,  the blooms appeared in numbers of one to three per stem. I like surprises such as this!