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- Super Green Thumb
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Information from here. https://www.ufseeds.com/Onions_5b9df96a3e6667dff4d212808.htmlOnions form bulbs in response to changes in day length, but different varieties have different "trigger points" that stimulate bulb formation. Short day onion varieties start to form bulbs as soon as day length exceeds 10 to 12 hours, but long day onions won't start to bulb until days are 14 to 16 hours long. Ideally, you want the onions to keep growing as long as possible before lengthening days trigger them to bulb, so different varieties work in the southern, central, and norther regions.
The sweetest onions are short day onions that grow best in mild-winter climates. Short day onions mature in about 80 days when planting in the spring. Short day onions don't store well because they contain so much water. After harvest keep them in the fridge. Try the Red Creol onion!
Intermediate day onions produce a beautiful onion with a balanced, spicy sweet flavor. When properly cured they will store for months.These are sometimes referred to as day-neutral varieties because they can be grown almost anywhere. Try the Candy Hybrid onion!
Long day onions grow best in the North region. These onions will form hard, pungent flavor that store for a very long time. Many small specialty onions grow best in northern climates. Try the White Spanish onion!
Eric
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- Super Green Thumb
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- rainbowgardener
- Super Green Thumb
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- Location: TN/GA 7b
Really? Wow. I'll have to try that. You're not far from me so I should have a similar result. I usually plant sets (aside from garlic and potatoes, it's the only thing I don't start from seed). From the sets, I get bulbs a little smaller than a tennis ball. Probably even smaller (I'd be real happy with a tennis ball sized onion). This year, I planted them much earlier so I hope it makes a difference.rainbowgardener wrote:In my experience, onions are very slow (at least from seed, I haven't done sets). The only way I ever get big bulbs like in the store is to plant onion seed in summer and just let it over winter. The next year, a beautiful onion! Otherwise I just get something more like a green onion.
To stay on topic, I wait until most of the onion tops have fallen over and lost their deep green color. Some of them will fall over immediately for various reasons, but when they're all down I think most of them are done growing. That's just a general rule of thumb. Some will usually still be standing when the time is right. Some of them will even begin to rot while their tops are still erect.
- jal_ut
- Super Green Thumb
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- Location: Northern Utah Zone 5
Onion sets should be planted very early. The first chance you have after the snow leaves your plot. Here that is usually early April. They need to have some time to get some size before the days are long enough for bulbing. I am talking long day onions for the North. Onions from seed planted early will also bulb, but you won't get the large bulbs that you get from sets or plants put out early.
[img]https://donce.lofthouse.com/jamaica/onion_fm_seed.jpg[/img]
Onions from seed
When are onions ready? Onions are always ready. You can eat them at any stage of their development. Enjoy!
[img]https://donce.lofthouse.com/jamaica/onion_fm_seed.jpg[/img]
Onions from seed
When are onions ready? Onions are always ready. You can eat them at any stage of their development. Enjoy!
I've read that commercial onion farms will trim the tops of the onions that they are producing for sets. This supposedly stimulates root growth. I don't know if that would apply to onions that you are trying to grow to full size. They don't break off the whole set of leaves, they just trim the tips of them.fishntime wrote:This is the first year for onions and they seem to be doing good. But I had someone tell me something that just did not make sense. He told me to break off the onion top and that you will get bigger onions at a pretty fast pace. Is that true?
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- Super Green Thumb
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- vegetable-gardener88
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