Then there is sea holly (Eryngium amethystinum). This was a challenge for me to grow. Not because it is delicate, but because it really only thrives in dreadful soil — sandy, infertile, and dry. My ...

2. Eryngium giganteum (tall eryngo) ‘Silver Ghost’ Next is a biennial that’s bound to bring texture to the planting scheme. The cone-like flowerheads are above spiked, silvery bracts that look ...