I live in Victoria, and have an oldish (40-50 years) apple tree in my yard (no idea what species - it's big - not a dwarf or semi-dwarf and apples are large). It's a beautiful tree, and I'd like to keep it healthy, but I really don't care about apple production or quality. Everything I read on the web about pruning and spraying apple trees seems to relate to improving the fruit. I'm trying to find out what is absolutely necessary to keep it healthy. Does it really need to be sprayed 2 or 3 times a year, and if so, for what and with what? What should my goal be in pruning? What are the dangers of letting it go "natural" - ie. not spraying unless/until I see a problem and pruning only occasionally to keep the shape? Any advice greatly appreciated.