Dieffenbachia amoena
Common name: Giant dumbcane · Charming dieffenbachia
Dieffenbachia amoena is a large-leaved species of aroid native to the tropical rainforests of South America, particularly Colombia and Ecuador. It forms a stout, upright plant with very large, deep green leaves marked by bold cream or white stripes along the veins, and can exceed 1.5–2 m in cultivation. It is one of the most popular dieffenbachias in the houseplant trade, grown for its dramatic tropical foliage. Like other members of the genus, its sap is acutely toxic and irritating.
Care summary
Sun
Bright indirect light; avoid direct sun
Water
Water when top few cm of soil dry out
Soil
Loose, humus-rich, well-draining mix
Hardiness
Zones 11–12
Mature height
About 150–250 cm (5–8 ft)
Pet safe
No — toxic to cats and dogs
Difficulty
Easy
Propagation
Stem cuttings are the usual method. Cut a section of cane with at least one node, let the cut end dry for a day, then root it in moist potting mix or water; top cuttings with leaves can be rooted the same way. Wear gloves, as the sap is irritating.
Fun facts
- Its leaves are among the largest of any cultivated Dieffenbachia, sometimes exceeding 50 cm in length.
- The cultivar 'Tropic Snow' has leaves so heavily striped they appear almost half white.
- The specific epithet "amoena" is Latin for "pleasant" or "charming," referring to its handsome foliage.
- Its calcium oxalate crystals make it unpalatable to most herbivores, an effective natural defense.