Sticks on Fire' or Firesticks (Euphorbia tirucalli): Striking reddish-orange, gold, and light green succulent. It has many coral-like branches, each about the width of a pencil. When planted in the ground in Mediterranean climates, it can develop into a 6.0"-8.0' tall shrub, though it will stay smaller indoors in a pot. The brightest red tones will emerge when the plant is under moderate stress from full sun, drought, or temperatures around 40F-50F.