Does fruitless olive bloom?

Best planted in the spring or fall, the slow-growing fruitless olive trees will bloom each spring with clusters of yellowish-white, tubular flowers. The flowers themselves are sterile, so few if any fruits are produced, but you may get some small (non-viable) olives that develop from time to time.

Do ornamental olive trees flower?

Olives flower in early spring. Trees take three to five years of growth until they produce their first harvest and most only become fully productive after eight or nine years.