Equisetum
Evergreen rush-like stems are bright pale green with black nodes From a primitive group of plants, it provides a striking architectural feature and contrasts with more conventional foliage and forms. Deep questing roots and invasive rhizomes make it suitable only for wild damp areas or in a container.
Having a very high silica content, it was used in the past as a pan-scourer. Its silica may have uses in the natural plant dyeing process.
