Asia bamboo fast growing fresh grass nature phyllostachys plant rain raindrops water waterdrops yellow yellow bamboo Australian competitive compound leaves evergreen tree fast-growing fast-spreading flora flower spikes flowers invasive native native flora native plant ornamental prolific prolific seeder Queensland native red spikes schefflera actinophylla spikes terminal inflorescence tree umbrella tree unique flowers background blue cape plumbago climbers hedge light blue perennials plumbago auriculata plumbago. fast-growing shrubs sky blue textures white woody stemmed