Asparagus Fern (Asparagus aethiopicus). Originating in South Africa, Asparagus Fern is a multi-branched prostrate perennial shrub forming a dense mat of tuberous roots. Branches grow to 60cm with a covering of small spines. Fruit are red berries to 8mm wide. Seeds are spread by birds, water and dumping. Asparagus Fern can also reshoot from rhizome pieces left in the ground or dumped as garden waste. This weed is invasive and poses a significant threat to the bushland environment.