Another plant that has flown the coop! For years this graced a raised bed and produced a ton of seed (its progeny are now thriving in OTHER people's gardens) and no matter what I do I can't seem to get this to grow again here or anywhere else in my garden. For five or six years it would bloom magnificently through spring, and in a few days in June shoot hundreds of seed all over the place. Would a single one of these have germinated nearby and perpetuated the show? No way.
Lupinus argenteus is somewhat similar, and is even rhizomatous. It has ramped over a large slope in the Dryland Garden at Denver Botanic Gardens, blooming on and off all summer. Staff dig chunks of this like bearded iris and plunk them elsewhere, where they take off and grow just fine.
But this most silky leaved and beautiful of Western lupines is a tad more fussy. Isn't that the way of the world?