I realize Lilium philadelphicum grows across much of the USA, yet one rarely sees it in gardens. Thanks to Laporte Avenue Nursery in Fort Collins, our local Rocky Mountain form is getting pretty wide distribution: here is a clump I've grown for a number of years beneath the big Scots pines in the eastern corner of my garden. There is something about the graceful bearing of the plant (not to mention its small size--only about a foot tall) that makes it a great addition to the woodland rock garden. The literature says it needs acid soil: that must be the eastern subspecies L. philadelphicum v. philadelphicum. Our miniature L. p. var. andinum can grow in very limy substrates. I've seen a large colony out on the Great Plains of Montana growing in a limy swale (not far from Choteau were the Grizzlies and Eritrichium howardii dance beneath the stars)...
