A member from Hawaii wrote: Raspberries (Rubus spp.) are particularly bad invaders both of natural ecosystems and of range lands. Here in Hawai’i the cost of managing invasive Rubus spp. (particularly R. ellipticus, R. argutus, and R. niveus) is far more than the value of fruit produced. They are bird-dispersed and pop up many miles from where they are planted. They are thorny and injurious to livestock and people.