The first of these two methods is simply dropping the seeds of the plant up to 20 cm (8") away from the base of the original plant. Given that each flower produces between 40 and 60 seeds, and that each plant can produce up to ten flowers, propagation may be rapid. Yellow soldier can grow in densities of up to 400 plants per square metre, with each plant capable of reaching full reproductive potential. This density prevents native plants from reclaiming lost ground.