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This plant grows in straight stalks up to 4' tall. It has tubular leaves that each propagate many tiny little new plants, so it spreads easily over an open area and has become a toxic weed in parts of Australia; it has a cardiac poison in it that can kill grazing cattle!
Kalanchoe delagoensis is a succulent plant native to Madagascar. The plant's capability for vegetative reproduction, its resistance to drought, and its popularity as a garden plant, have allowed the plant to become an invasive weed in places such as eastern Australia and many Pacific islands.