Suitable for naturalizing in thin light soils in contained areas (in can be invasive). Beautiful chartreuse flower clusters on top of stems that grow about 12 inches tall. A durable plants that needs plenty of room to grow because they can spread by rampant underground runners. Drought tolerant species. Avoid contact with the milky sap of the leaves that can cause dermitius. Best grown in dry, well-draining soils in full sun. Does well in poor soils, including rocky, and sandy ones. Is invasive in rich, moist soils, by freely self seeding and by underground running stems.
Euphorbia cyparissias can invade disturbed areas and is toxic to livestock. It can grow into large infestations displacing native vegetation. It is native to Europe and western Asia. It was first introduced into the United States in the mid 1800s as an ornamental.