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Tree Onion
The stalks, bulbs, and topsets are all edible and can be used in place of regular onions. The young leaves, shoots, and stalks can be used like spring onions in soups, stews, omelets, stir-fries, or as a finishing herb. The small size of the topsets make them ideal for pickling and they can also be drizzled with oil and salt, and roasted whole.
How to grow
The best time for harvesting is August, when the bulbs are ripe and firm. For more plants dig up the mother bulb in autumn, divide and plant each individual bulb in new locations.