You should have mentioned how good the fruit is, they are tasty and are very good for you, lots of people grow it for the fruit, and don’t forget the rose apple and wax jambu
Depends on how heavy the clay is and how tall you want it. Acmena smithii, many of the Callistemon, Westringia, Acacia rubida, Leptospermums and Melaleuca plus Westringia. Check the out at you local nursery to see if they will work in your area.
Yes, most species have edible berries, however they are not really that tasty straight off the tree. Usually used to make Jams and Jellies. Lots of recipes online.
They are edible and are very good for you, full of antioxidants. They are tasty and are a lot like the rose apple and wax jambu as they are from the same family.