Your spreading elephant ear (likely Colocasia or Alocasia) can be divided by gently excavating offsets from the main corm. Replant immediately or store roots in a cool, dry box over winter (cut tops in October, plant in April) if unsure of hardiness.

Watering Alocasia (Elephant Ear) in Hot Weather
Propagating Elephant Ears: Division, Timing, and Leaf Production
Alocasia Guttation and Repotting Mistakes
Transplanting Elephant Ears for a Move: Dig, Pot, Hold
Overwintering Elephant Ear (Colocasia) Bulbs in Nebraska: Dig, Cure, Store, Replant
Overwintering Elephant Ear Corms: Digging, Storing, and Replanting
Elephant Ear Leaves Are Edible: Cooking Colocasia for Traditional Dishes
Transplanting Elephant Ears from Pots to Ground in Central US? Better in Pots—They're Cold-Tender
Overwintering and Propagating Upright Elephant Ears (Colocasia)
Beyond Elephant Ears: Moist Shade Plants for Late Afternoon Sun
Giant Elephant Ear (Colocasia gigantea): Massive Tropical Foliage
Alocasia (Kris Plant / Elephant Ear): Care Guide for This Stunning Foliage Plant
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