 Best trained as a tree rather than bush to make harvest of fruit easiest, the Evans Cherry is a self-fruitful, zone 3a cherry with a ripening season in North America in August.Ieuan Evans, who is a horticulturist, and was a specialist in plant disease and a research scientist for Alberta Agriculture, discovered a gardener, identified as "Mrs Bower," who lived northeast of Edmonton near Fort Saskatchewan.She had been growing cherry trees which bore abundant fruit that dated to 1923.