Eryngium yuccifolium - A great mingler with interesting pale green foliage (yucca-like!!) and structural flowering stalks with white thimble flowers. Not as imposing as E. eburneum or E. paniculata, more apt to weave about amidst other things. Native to North American prairies. Will self-sow under favourable conditions. Pollinator plant. Somewhat prickly leaves so might be more unpalatable to deer than some, also helped by the fact it is often winter deciduous here. Needs some summer water. Long lived. Sun to part sun, well-drained, low water, height 1.2-1.5 m.