The seeds germinate mainly in autumn but can germinate at any time of year if the soil is sufficiently moist. They remain dormant in the soil if conditions are unsuitable for germination. Boneseed is a heavy seeder which spreads rapidly. The seeds are dispersed mainly by birds and rabbits which eat the fruit and void the seed. However people have also distribute the plant widely as garden specimens.
New infestations can start from dumped garden rubbish or when gravel is carted from infested areas.
Description Boneseed is an erect, shallow-rooted shrub which grows up to 3m tall. It has a single, branched stem and dull green, irregularly serrated leaves arranged alternately on the branches. The flowers are typical daisy flowers . Flowers are up to 3 cm in diameter and are formed in clusters at the end of branches. Only one seed is produced by each floret .