Begonia 'Immense' is a rare, gigantic leafed rhizomatous hybrid. The leaves are light green and can get 18in or more across (yes you read that right). It has an open growth habit. The flowers arise above the foliage in winter and early spring. The flower buds are greenish and open to pinkish white flowers. Immense will grow into a huge plant in the right conditions - think mature Monstera deliciosa big - it can get 5ft. across.
They're easy to grow, so have fun!! Don't say we didn't warn you!