Feijoa sellowiana, or Pineapple Guava, is a gray-green evergreen shrub or tree (depending on pruning) which produces small, tasty fruit in late summer and early fall. The plants can be pruned to form a hedge or a small tree." UF Hardy in Zones 8A - 11. As a tree it can reach a height of 10 - 15 feet. Bears showy red and white flowers in the spring, followed by fruits within 5 to 7 months.