Williams' is believed to have first appeared as a tall mutant in a 'Chinese Cavendish' ('Dwarf Cavendish) plantation in Australia in 19101 . It soon started replacing 'Chinese Cavendish' and, by the 1950s, became the most widely grown cultivar in the country. It was introduced in Hawaii in 1953, where it soon replaced 'Chinese Cavendis'h in commercial plantations and also became the third most popular backyard banana (after 'Chinese Cavendish' and 'Hawaiian Apple').
Expect to water the plant every two to three days. If your tree is potted, ensure the pot has drainage holes to allow excess water to escape.