Plant of the month – Blue Eryngo

Eryngium planum, known as Blue Eryngo or Flat Sea Holly, is native to central and southeastern Europe and central Asia. It is a herbaceous perennial growing to 90 cm high with branched silvery-blue stems, and numerous small blue conical flowerheads surrounded by spiky bracts in summer. It is bush-like in appearance but fits in well in any herbaceous border.   It has…