5 JACK IN THE PULPIT (Brown Dragon) Arisaema Triphyllum Flower Seeds BLOOM TIME: Spring HARDINESS ZONE: 3 - 9 PLANT HEIGHT: 18 - 24" . . . PLANT SPACING: 15 - 18" LIGHT REQUIREMENTS: Part Shade - Shade . . . SOIL / WATER: Average Here is another lovely stunner for your shade garden! These are very unique looking . Part or all of the plant are poisonous, so take care around children and pets.