Noted for its unique variegated flowers and foliage, Euphorbia x martinii 'Ascot Rainbow' (Martin's Spurge) is a bushy, dwarf evergreen sub-shrub of great ornamental interest. It forms a mound of stunning rosettes of lance-shaped gray-green leaves adorned with a golden yellow edge.
Ascot Rainbow' typically does not need to be cut back after flowering. At the end of the season, it typically remains standing through the fall into early winter. It is one of the last perennials to go dormant. Cut it back in early spring before new shoots emerge for a better flowering performance.
The Euphorbia 'Ascot Rainbow' is considered a poisonous plant. It is suggested to use caution when handling the Euphorbias. Gloves and long sleeved shirts will help to keep the sap from touching the skin. The sap can be an eye and skin irritant. Ascot Rainbow' features variegated foliage in an array of greens and yellows, maturing to shades of red and orange with the onset of cooler evening temperatures in fall. Although mostly grown for its foliage, 'Ascot Rainbow' also produces terminal flower clusters with variegated bracts in spring.