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Part 2 of my series on Potato Onions. See full potato onion playlist here: https://www.youtube.com/playlist?list=PL60FnyEY-eJBDhVK5y8Qs7XRHIFmuzeFl I'm only really covering the Heirloom Yellow Potato Onion and Kelly Winterton's Green Mountain Multiplier. I haven't been impressed enough with the white potato onions to keep growing them. I'm sure they have their place and uses, but they are very different. Sometime on or after the winter solstice on Dec. 21st in the Northern Hemisphere, I plant the first round of potato onions. This is a good time to plant onion bulbs that don't look like they will make it through the winter in storage. Potato Onions are traditionally fall planted in some areas. I have not noticed any benefit to fall planting so far. On the contrary, they will often flower if planted in the fall or early winter. Onions planted extra early don't mature that much earlier, somewhat earlier, but not a lot. They get the signal to mature more by daylight than by time passed. Support me by using this link whenever you shop on Amazon. Free for you, a big help to me: http://amzn.to/296alqr Visit the SkillCult Website and Blog: www.skillcult.com Subscribe here: www.youtube.com/skillcult Potato Onions should be planted with part of the tip exposed. Normally about 1/2 to 2/3rds of the bulb should be buried, but If winter planting I will sometimes plant them up to the neck because frost heave will actually push them right out of the ground if the roots aren't deep enough. They grow roots almost immediately, but they have to be a couple inches long before the bulb is rooted really firmly. Spacing is around 8 to 12 inches. Too close and the onions will be small. I probably typically plant them about 10 inches on center in a grid pattern, meaning every onion is 10 inches from every other onion. If planting in rows, the onions can be put a little closer together as long as the rows themselves have adequate space between them, say something like 8 inches in the row and 16 to 18 inches between rows. All onions appreciate consistent water and these are no exception. Like other onions, they tend to like to feed heavily, so putting on food during the growing season every 3 to 5 weeks is a good idea. I top dress with manures or water with manure tea. Coffee grounds are excellent, as are wood ashes for lime and other minerals. I like urine best for onions and general fertilizing. It has a lot of nitrogen which seems generally beneficial for onions, plus all of the trace minerals. On top of that it is free and all the nutrients are soluble and already dissolved in solution. Dilute by about half or so, apply with a watering can, and water in immediately. It doesn't have to be aged or fresh. Guys can just pee on the beds if the neighbors aren't going to call the cops or health department on you. I don't have any neighbors :) To read more on using urine as a fertilizer and addressing some of the common fears and myths, read my amusing and informative blog post, Ten Yellow Terrors! http://skillcult.com/blog/2013/12/08/dissolving-myths-and-fears-about-using-urine-fertilizer That is about it I guess!