Emerald Isle Elephant Ear

Emerald Isle™ is the Proven Winners trade name for Alocasia ‘AP091520’, a vigorous, fast-finishing selection with large, glossy, bright green leaves and an upright clump that arches as it matures. Its bold foliage suits large containers and warm-climate beds where there is room for its broad leaves. ## Garden character and size The [Proven Winners profile](https://c5.provenwinners.com/plants/alocasia/emerald-isle-elephant-ears-alocasia) lists mature plants about 3–4 ft tall and 3 ft wide, and notes they can grow larger in the South with a long season. It tolerates full sun or shade; afternoon shelter and protection from strong winds help keep the large leaves presentable. The patent identifies ‘AP091520’ as a naturally occurring mutation selected from Alocasia ‘Portora’, with greener petioles and glossier, more undulate leaves than its parent. ## Growing conditions Use a moisture-retentive, well-drained mix and water consistently, allowing the surface to dry slightly between waterings. A humid, sheltered position with generous root space supports larger growth. Proven Winners lists it as a tender annual for many seasonal displays, while the cultivar patent reports hardiness across USDA zones 7b–10b; in cooler areas, treat it as a warm-season container plant and protect or overwinter the rhizome. ## Cultivar and patent U.S. plant patent PP34,129 names ‘AP091520’ and was granted April 12, 2022. The grant date is recorded here; current legal status is not asserted. See the [patent record](https://patents.justia.com/patent/PP34129). ## Maintenance Water deeply when the mix begins to dry, then let excess drain. In windy sites, move containers to shelter or use a protected planting position. Check indoor plants for spider mites and aphids; remove damaged leaves as needed.