Onion Australian Brown SeedsOnion Australian Brown Seeds: Large, Flavourful, and Long Lasting Bulbs Onion Australian Brown is a renowned intermediate day, long day onion variety that produces large, round bulbs with a rich copper brown skin. Known for its superb flavour and excellent storage qualities, this variety is a staple in gardens worldwide. Australian Brown onions are perfect for adding a robust onion taste to both raw and cooked dishes, making them a versatile choice