Cupressus sempervirens Italian Cypress. Cupressus sempervirens is an evergreen Tree growing to 30 m (98ft) by 5 m (16ft) at a medium rate. It is hardy to zone 7. It is in leaf 12-Jan It is in flower from Jan to February. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind.