|Young Yucca linearifolia 'Dusky Blue' surrounded by colchicums in my front border|
Anyway, Sean Hogan, being the Yucca King, had some good looking, albeit small plants of this yucca for sale a few years ago when I stopped at Cistus as I was passing through Portland one day, and so, of course, I bought 5 of them. These were labeled Yucca linearifolia 'Dusky Blue', which must mean that they are a selection which has bluer foliage than the usual, although that is just a guess.
I gave one to my sister who lives in Salem, and planted the rest in my garden. One went into the front border and the rest I planted near the lionness sculpture. That was about 3 years ago, and so the plant you see in the picture is the growth after that time, and you can see that it is advancing at a good rate. I would guess that they should start showing some trunk in a year or two. I should add that the one in my sister's garden is significantly bigger than mine, which just illustrates the greater heat available to plants in the Willamette Valley as compared to here. Most plants in her garden seem to grow at a slightly faster rate than in mine (and she is not secretly fertilizing them). Indeed, just about the only plants that might do better here are the more cool loving New Zealanders, such as Aciphyllas and Myosotidiums, and of course, Meconopsis.