i made a flower tower for my mom for Mother's Day. pretty inexpensive, except for the flowers. the directions call for for 60 flower plants. unless you have started your own plants, that was the biggest expense.
In Charlotte, North Carolina, a self-taught gardener (who watched a lot of gardening shows on television!) turned a hilly, unbuildable property into a dreamy woodland landscape, complete with waterfalls and several ponds.