If you live in Brisbane or similar subtropical you should be able to grow them year round. Mulch and slightly raised beds to keep soil temperature constant. Also try different varieties. Traditional big black grows best in spring. Try varegated purple or white varieties all year. Heavy fertilising or hot winds can cause dropped fruit. I've found full sun with western shade best position for long growth and moderate fruit. I think the gardenate planting times are a bit restrictive. If you get seedlings they are worth a try all year. They like free draining moderate heavy soil. Like 50%potting mix/ 50% mushroom or worm compost. Any brisbane black soil is good.

- Ian