We have Yucca's filamentosa, aloifolia, gloriosa and the spineless Yucca elephantipes that grow here. I'm not sure which ones grow in the NW but maybe Yucca glauca? Soapweed (Yucca glauca)
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!