Sundews, like other carnivorous plants, have adapted to low nutrient soils by eating bugs. They produce alluring drops of mucilage that retain and asphyxiate any insect that touches it. Digestive enzymes are then released and the nutrient absorbed.
D. peltata produces underground tubers during its winter growing period. The foliage dies along with the heat of the Australian summers, with the tubers surviving in a dormant state. In autumn, the plant produces a small rosette, followed by a 40cm tall trapped scape.