Remember that plants that need full sun will rarely survive in shady situations. Avoid overwatering Australian plants. Most Australan plants will grow well without extra fertiliser. High phosphate fertilisers in particular may be harmfull. Mulches and groundcover plants can help reduce weed growth and keep the soil cool, moist and friable.
Light pruning immediately after flowering helps promote compact growth and more flowers.
Heavy pruning, although tolerated by some plants, may kill others which reshoot poorly from old wood.