Koalas generally live in open dry forest country - not wet rainforest. Cycads,Bowenia,Macrozamia,Lepidozamia,Codiaeum and all Aroids are toxic, very toxic and while the K's may not eat them just chewing on them could be fatal. I am not a Koala expert but know that what is poisonous to one type of animal may not be poisonous to another, ie seeds which a bird can eat may kill a human. K's have a specially adapted digestive system to process the eucalypt leaves. I would SUGGEST YOU GET IN TOUCH WITH AN AUSTRALIAN ZOO SUCH AS AUSTRALIA ZOO IN QUEENSLAND OR LONE PINE KOALA SANCTUARY IN BRISBANE BEFORE PLANTING ANYTHING IN THE ENCLOSURE. I presume the wellbeing of the Koalas is more important than the wellbeing of the plants. Many of the plants listed so far in this post will not grow in a shady area so do your homework thoroughly before you spend any of your $800 budget. It would be a pity to waste it on plants that will never prosper. Callistemon and Lily pilly (Syzigium) are easy to grow from seed but are unlikely to grow in such small planters for very long. Birs nest fern should do well in planters. Koalas are more endangered than any of the plants listed so please be careful.

OK, wattleblossom - your garden sounds absolutely spectacular, but there are several points I'd like to make: 1. 'Your mileage may vary' : many of the species you have successfully grown, be they from Oz or wherever, simply wont do well in large parts of Queensland/Northern NSW/NT. Thats commonsense, but its easy for new gardeners to get drawn into the images presented by the (south-dominated) gardening media. Its a tribute to you that you have found the plants that thrive in your area. 2. Both sets of plants will be as 'low maintenance' as you want them to be, and that comes down to your preferred presentation. For example, pruning is a must for many shrubs, but how many need to be topiarised ? We can create hedges with exotic conifers or a species such as Melaleuca, but how can we prevent dieback in the centre of our new hedge ? This is one area where an informal planting scheme wins hands down, at least IMO. 3. From your description, it seems that you have two clearly delineated areas, and plants belong in one or the other by courtesy of their origin. I accept that this works for you, but have to ask if we need to build such arbitrary boundaries. I've made the point several times that I believe many of our rainforest plants are good companion plants for Vireya Rhododendrons, Gardenias and similar glossy-leaved exotics, and mixing dry climate plants from similar latitudes is already a well-worn path. Proteas are a slightly different story, although my 'high NPK' experiment still hasnt killed my tropical grevilleas :) 4. I also struggle with the insect-attack issue : none of us likes to see their evil handiwork, but I've been very lucky to date. Grasshoppers and caterpillars currently seem to be be enjoying exotics and natives alike in my garden, but its also rewarding to watch a magpie flying off with one of the marauding bugs protruding from its beak. Its currently very dry in CQ, and I suspect that this has pushed the insects into our gardens in larger numbers - they werent a problem in Summer. None of this makes my opinions any more valid than the next persons, but I do think that tight integration between Australian and imported plants is the key for the future of our native plants in commercial horticulture (as opposed to conservation). It will be a sad day when city kids can only see native plants in a botanical garden or arboretum. You or I could build an incredible garden using only plants from Madagascar, but would we be willing to limit ourselves to that one (admittedly sensational ..) island ? Who knows - Bunnings might start shipping truckloads of Madagascan plants after our gradens make the glossies :)

I did not mean to offend anyone, natives are good but you can't just plant them and leave them. I think you would have to do a fair bit of research regarding the best natives for your situation. You cant just stereotype them, give them the same treatment and expect them to look good. I did not tell nickyz to forget natives, just reconsider where they are to be planted. Palms (natives) do not cause the same leaf (and root) problems as other plants near pools to that would be the best option for this situation. On the gold coast I imagine that you can grow a very pleasing tropical native garden. If you do choose natives, you have to look after them. A really good book to get started is "Starting out with natives" by John Wrigley and Murray Fagg.

Experimentation is fine if it is based on understanding the peculiar aspects of what ever plant we are dealing with. When it comes to Australian native Proteaceae plants there are unique considerations that need to be taken into account. Once we have an understanding of these characteristics then by all means we can take advantage of them. Experimenting blindly is not nearly as constructive. Australian Proteaceae plants are sensitive to Phosphorous to varying degrees. BUT it all makes sense if we are aware of what their original environment was. Proteaceae from the skeletal sandstone soils that have always been very low in nutrients, especially phosphorous, have over thousands of years, developed special adaptions known as proteiod roots. They are noticeably different. (I shall spare you further details about Proteiod roots, but a Google might give you more.) Plants developed these in order to maximise the surface root area so they can absorb the scarce nutrients that may be present in these sandstone derived soils. However in the more nutrient rich rainforest zones it is quite possible that Proteaceae are more tolerant of nutrients and maybe even Phosphorous. I always err on the side of avoiding common fertilisers with high rates of phosphorous. Even chook poo can cause problems, although I do give my rainforest plants a dose of Dynamic Lifter once a year. For example, I find Banksia ericifolia to be very sensitive while some Grevilleas are a bit more tolerant. As for your last remark Nathan I assume it is a joke. Anyone being wrong, should not inferr anyone is not wanted.