Euphorbia Tirucalli (pencil tree)  is a succulent shrub or small tree that usually grows up to 16.5 feet (5m) tall but occasionally may reach up to 33 feet (10m). stems are fleshy,smooth,green,cylindrical up to 0.3 inch (2.5cm) long leaves that soon drop. flowers are yellow,inconspicuous and carride in the angles of the branches. they a ppear during the cooler months of the year.