I am setting up a garden in Conway Arkansas, anyone nearby who has multipliers and can spare some, I would appreciate a call. Each plant should be in a pot at least 18 to 20 inches across. The first pulling of green onions should be taken from the center of each bulb to leave more space for the following shoots. Multiplier onions, also known as bunching onions, spring onions or green onions are used for their green stalks. I will speak with him. Laying out in the sun works, as long as the weather is dry. Each bulb cluster of potato onions may contain many bulbs, averaging 2 to 2-1/2″ in diameter. They throw up stalks with a bunch of little onions at the top. Regrowing Our Inventory. They can handle both extreme heat and hard freezes. In a month they have sprouted into 6 or 8 green plants. They are also sometimes referred to as potato onions or underground onions. With any of these fungus infections, you should rotate your onion crops to another part of the garden for at least 3 or 4 years because the spores can survive that long. Potato onions don’t send up a stalk, but split readily. Bulbing multiplier onions are also know by the following names: Potato onions; Hill onions; Ground onions; Inground onions; Top-set Multiplying Onions. Replies. The difference in normal onions and multiplying onions is. We grow a true multiplying onion which multiplies by bulb division only. They are quite high in chromium, fiber and even vitamin C. You may not think of chromium as an important mineral, but many people are actually deficient in it. You can plant multiplier onions in the spring or fall but a fall planting will give you an earlier start for growth next spring. Multiplier onions are perennial in U.S. Department of Agriculture plant hardiness zones 5 through 9. When a small bulb (3/4″) is planted, it will usually produce one or two larger bulbs. Various fungus and mold problems can crop up. When on bulb of a multiplier onion creates many onions, that are full of divisions to create even more. Once they come up they start multiplying. Mine were planted in fall and have only one bulb at bottom. Example of popular winter onions include: White multiplier onions, which develop thumb-size bulbs; Yellow potato onions, heirloom onions that have been around for well over 200 years. The only difference between multiplier onions and “regular” onions is the way they grow in bunches. These heirloom hard to fine white potato onions, also known as multiplier onion are a great addition to any garden. Customer Reviews. Tom, Bedford, New Hampshire, Where can I buy some to start in my garden. White Ebenezer Onion Sets 1/2 lb. They only get about half day of partial sun, I suspect this might contribute to some problems, but would it kill them completely? The “potato” onions work well for me in Maryland. Makes green onions,then matures and makes bulbs. See also onion seed for dry bulb onions and bunching onions. More explanation: Egyptian walking onions also are referred to as multipliers. Winter White Onions Container: Large pots only. These heirloom hard to fine white potato onions, also known as multiplier onion are a great addition to any garden. Can also be harvested for bunching onions in spring. The instructions said to plant the “cloves” as late last fall as I could and cover with mulch which I did. This year I tried something different. Carol, This is my first year growing multiplier onions. Keep them spaced further than with traditional onions, about 10 inches apart. Just like with garlic, the pungent smell of onions can repel many insects so they are often a bug-free kind of vegetable to grow. These unique perennial heirloom onions, also known as tree onions or walking onions, form clusters of very small bulblets or sets on the tips of the leafstalks. 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