This year I am growing onions from seed for the first time, after many years of using onion sets. Part of my motivation is cost, but I also read in Le Jardin Vivrier that onions from seed tend to store better. Here is the approach I am taking based on the principles of no-dig, intense planting. I started my onion seeds in a tray. I planted them very densely in rows. I didn't thin them. I trimmed them a couple of times to keep them around 6-10cm long. The trimmed ends are very fragrant and I used them in my cooking. Once it was transplanting time, I trimmed them once more to around 6cm, and loosened the soil in the tray. It was easy to pull out the tiny onion seedlings and untangle them. I grabbed 3-4 onion seedlings at a time My garden surface was already loose soil (if it had not been loose I would have used the broadfork to loosen it). I had recently replenished the mulch covering it, with a layer of leaves and a layer of grass clippings. I used my hori hori knife to spread the mulch apart and make a small hole. I placed the 4 seedlings in the hole, making sure not to cover them above the split in their leaves. I packed the soil around them a bit. The reason I put 4 onions per hole is that they will naturally push each other apart as they grow. In many cases I will harvest one per hole as a "green onion" early in the season, and maybe even another one to cook as a young onion, but they'd be fine left together to maturity, too. I used a distance of 8 inches between each 4-pack of onions. Even this densely packed, since onions have such skinny leaves, they won't shade the soil and weeds, so it will be important to keep a thick layer of mulch in between the onions, all summer long. I planted my onion sets the same way. In total, I have about 300 onions planted. They are one of those things that we never seem to have enough of! One of my favorite uses is French onion soup, which I pressure can.
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January 2025
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