In the 1970s the dunes between the lake and the harbour were sown with tree lupin (Lupinus arboreus) and Marram Grass, which has reduced sand movement and provided a low quality pasture.
On Lupinus arboreus, the larvae feed on the leaves instead of the flowers.
Lupinus | Lupinus arboreus | Lupinus perennis | ''Lupinus latifolius'' var. ''barbatus'' | Lupinus albus | Lupinus albifrons |