Posted: 31/05/2014 at 07:47
I'm guessing you're in the swan river basin. I've seen lots of the white zantedeschia growing as a weed up there in boggy areas. As its classed as an introduced weed I guess you won't want it. There are coloured versions you may get at Bunnings.
You could grow many plants that we can't grow in England,because there is no frost or snow. You could use swamp myrtles or the paperbark eucalyptus for shade. They will be ok with wet feet. A lot of plants that need better drainage,would be better in big pots or raised beds adding sand and gravel to increase the drainage.
Kings park has a sale of native plants every spring. The resident botanists should be able to give you advice,or you could look around the lower lakes and see what is growing well.most plants are labelled.