Pompom yellow mimosa flowers are produced on this evergreen tree against a backdrop of feathery foliage in spring the scented nectar45rich blooms provide a valuable source of food for bees and other insects in mild parts of the uk acacia dealbata plants can be grown outdoors making a brilliant specimen for sheltered borders in frost prone areas grow acacia in containers and move them to a frost free position in winter height 8m 40263941 spread 5m 40163941