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Dieffenbachia seguine

Common name: Dumbcane · Tuftroot · Mother-in-law plant

Dieffenbachia seguine is a species of flowering plant in the arum family, Araceae, native to the tropical Americas from the Caribbean to northern South America. It is an evergreen perennial with broad, cream- or yellow-variegated leaves on thick, cane-like stems, typically reaching 1–3 m tall. It is one of the most widely cultivated houseplants in the world, valued for its bold foliage and tolerance of indoor conditions. Its sap contains needle-like calcium oxalate crystals that cause painful swelling and temporary speechlessness when chewed, hence the name "dumbcane."

Fun facts

  • Its common name "dumbcane" comes from the toxic sap, which can temporarily paralyze the vocal cords when plant tissue is chewed.
  • Popular cultivars include 'Tropic Snow' and 'Camille', often sold under the synonym Dieffenbachia maculata.
  • The genus is named after Joseph Dieffenbach, a 19th-century head gardener at the Schönbrunn Palace gardens in Vienna.
  • Historically, the plant was cruelly used in parts of the Caribbean to punish enslaved people, a dark chapter noted by early botanical writers.

Care summary

Sun Bright indirect light; tolerates shade
Water Keep evenly moist; let top inch dry between waterings
Soil Rich, well-draining potting mix
Hardiness Zones 10–12
Mature height About 100–300 cm (3–10 ft)
Pet safe No — toxic to cats and dogs
Difficulty Easy
Propagation Propagate by stem or cane cuttings. Cut the cane into sections with at least one node, let them callus briefly, then lay them on or plant them in moist potting mix until new shoots emerge; leafy tip cuttings root readily in water. Handle with gloves because the sap is toxic and irritating.

Make your own Dumbcane · Tuftroot · Mother-in-law plant profile

Common problems

    • Let top soil dry before watering
    • Repot into a free-draining mix
    • Empty saucers after every watering
    • Rinse foliage under a strong spray
    • Raise humidity around the plant
    • Treat with insecticidal soap
    • Move closer to a bright window
    • Cut canes back to encourage branching