Arisaema – Jack in the Pulpit
There are around 150 species of spring or summer flowering tuberous or rhizomatous perennial from moist woodland and rocky wastelands from the Himalayas, China, Japan, and North America, in this genus. Grown for their attractive unusually spathes. They bear 1 or 2 simple, palmately lobed or palmate mid green leaves per shoot. Dense clusters of spherical to oblong, red to orange berries, follow flowers.
When grown indoors plant in deep clay containers in equal parts of loam, leaf mold, and grit in bright indirect light. Water freely during growing season and apply a balanced liquid fertilizer monthly. During dormancy keep cool and barely moist.
When grown outdoors, grow in moist but well drained in neutral to acidic, humus rich soil in a cool partially shaded site. Will tolerate moderate to severe frost.
Prone to slug, vine weevils, rust, anthracnose, leaf blight, (Streptobotrys), and dasheen mosaic virus.
Arisaema triphyllum – Arisaema atrorubens – Jack-in-the-pulpit – This tuberous perennial from Eastern North America grows 6-24” tall. It produces 1 or 2 palmate leaves each divided into 3 narrow, oblong to ovate leaflets, 3-6” long. From spring to early summer it bears hooded, green, often dark purple striped spathes, 4-6” long. In autumn it bears showy clusters of red berries when leaves have died down.