Is it OK to transplant as soon as the third leaf is up? Onion germination is fastest as 68-77°F (20-25°C), with slight temperature drops at night. Please bear in mind that I am an onion maniac, and I have no explanation for my obsession with growing onions and shallots from seed to table year after year. Any information would be appreciated! It's been a big help. ", "Also I forgot to mention, I have 2 6500k fluorescents an inch or two above them about 15 hours a day. When the plants perk up and show new growth, they won't need protection from wind and cold anymore. Thanks,", "I think you may have little bulbils, which can be replanted but are probably dormant right now. Soon after transplanting, my onions often shed the seedling leaf (sometimes called the flag leaf). Thank you for this article it has been very helpful! For instance, if I am using 3" square pots, how many seedlings can I transplant to that conainer without crowding them too much? How can I do this again? I do have a question for you though I have chickens which I deep bed (don't change bedding but keep adding more bedding and a layer of barn lime) during the winter what's your thoughts of lining the bottom of the trench with this come spring. ", "Howdy from Calgary. I have several other posts about using and harvesting onions if you are interested. I am interested in growing onions in Uganda. Should I plant them out in the garden now? Thanks! ", "Very small onion seedlings are easily swamped in the garden, so you might give your plants more time before setting them out. I have also interplanted pansies with lettuce, which was very pretty. Plant each one about 1/2 inch deep in a small hole. Do you remove them completely from the soil or do you keep as much soil as possible around each seedling? I will be growing them in 4 IN, square pots and i see you said 2 seeds per pot it is still a good 90 degrees here and will be doing this in my green house so basically i need to keep bottoms warm until germination correct? Having said that I'm still snookered as I only have my allotment greenhouse to sow in (Birmingham, UK). ", "Thanks Barbara for answering. Trimmed the tops back a few times. I keep the lights on my onions for 12 hours a day, and position them within 1 inch (2.5 cm) of the bulbs. Onions need a bit more moisture than other seedlings but will rot if kept too wet. This is my first growing from seed attempt, and lacking all knowledge, I pulled (ever so gently) the seed hull/husk off of the tips of my onions seedling when they started to weigh them down. Label the container with the name of the onion variety. I've read some sources that say continue to trim the tops until winter comes to promote root growth and then let them go gangbusters in the spring. In this first of two articles on growing large onions for show, he reveals the secrets of starting large exhibition onions to … So firstly, do i keep them in containers for all of the first year and plant them outside next spring? I have a blog post with a free guide if you want to learn more about it. Thanks", "Hello, 1 thing i'm confused about is this...i live in England and sowed a packet of Bedfordshire Champion seeds a couple of weeks ago. I'm hoping to do better this year. After the seedlings are 4 inches tall, plant them outside at least 3 inches apart and give them enough water to keep the soil damp. This will help the containers from becoming top heavy and furnish more nutrients to the roots instead of the foliage. Do I still have to plant my seeds in a covered nursery or plant directly in the soil? I've been giving them feed every week, he hasn't. This also destroyed some well germinated onions. Are row covers helpful to onions through the winters here? Ha! My question is, is there any reason why I shouldn't start the seeds individually in root trainers and continue growing them on in there until planting out? The Nitty Gritty on How to Plant Onion Seed. Last year I followed this procedure for banana shallots (variety Figaro) and had an amazing crop which we are still eating. When I come to transplant after the third leaf, and ultimately into the ground, does this philosophy still apply? Be ruthless. ", "Hello Barara, I grew onions from seed for the first time last year....WHAT A BUZZ!! Onions need about 1 inch of water per week, so if the weather is dry, you’ll need to water. ", "Here in the West midlanmds we are plagued with onion Leaf minor on both onions and leeks- this is a pest which appears to be steadily spreading across England. All you need to do is cut them back to about 1 1/2 in tall. ", "Erica, those first leaves are wimpy seedling leaves that die off naturally, usually as a new leaf is emerging. Hey Mark, That being said, I planted on 3/5 and my first one popped up on 3/11, all were looking great. I take that onion bulb it spoil inside the soil. ", "Hi my seeds are comming along nicely on my window sill it is really unseasonably cold here for March at least 10 degrees colder than usual Ive a feeling it could be the middle of April before we even reach cold frame stage,will it matter that final planting could be much later than expected? Harvesting They go great in quiche. The clay soil may help the scallions to stand a little stiffer. Ours get a lot of time in freezing temps (both in the cold frames and after they are transplanted) and do just fine with very little bolting (we do around 15K and maybe 10 will try to bolt)", "A good estimate, assuming reasonable soil quality, would be a handful of good compost beneath each onion plant. I have no idea where these came from since I started with seeds, used a sterile soil, and don't know of any onion gardeners around here. ", "Julie, cut them back only to 3-4 inches. What has been the problem and what can i do to make the remaining seedlings survive better? I have tried trimming my onions after planting them out and they start to gain size. ", "Greetings, So around the middle to the end of March - is this correct? These are not the same as supermarket garlic! Rinse them off and use them like chives. All you have to do is blend spicy peppers, garlic, and onions with some water and organic soap. (We won't display this on the website or use it for marketing), (Please enter the code above to help prevent spam on this article), Which Seeds to Start First? Good luck! Or do i plant them outside this year? ", "Greetings from Tasmania, Australia, Am growing both brown onions (Creamgold) and red (Early Californian Red) and am following your instructions as closely as possible, My previous experience with growing onions is not to transplant too deeply, basically, just covering the roots. I'm not sure why people plant them around the perimeter though, someone told me they're supposed to help ward of pests. ", "Mary, at this point the best thing you can do is to put your onions in the ground where they can stretch their roots. Thanks for the tip on trimming as they are falling over. i'm hopeful they will do well when I transplant them into the garden in 3 to 4 weeks. Keep the onion seeds in the fridge or freezer until late winter, and start them then. Transplanting your Onions to the Garden. Good luck! Just learned that to get good size bulbs I have to start onions from seed so thanks for your info. How much protection do scallions need here? They seem to be doing the same thing. Is this OK or should I cover them with a polythene cloche/hoops? Thank you! ", "This year I sowed a few seeds in deep cells. Would a chick heat lamp work maybe? Onion seedlings are very forgiving and willing to grow in crowded containers in late summer when there is plenty of available light. apart. Rick, My husband is the one who sowed them so I don't know how deep he went, from what I have read they only need to be surface sown. I kept the seedling trimmed at about 3.5" when they were in the nursery containers. On the positive side, these trimmings are great in scrambled eggs or scalloped potatoes. Using containers too large invites problems with root rot and damping off. In the past year, both Ben Vanheems and I have written about the virtues of growing onions from seed. Is this true? It is important that the green do not get bent over because this will stunt their growth. Then, when ultimately I plant outside, which may be several weeks later, again, how deep should I plant? If I do not lift and move my multipliers in the fall, they become magnets for onion root maggots. ", "Thanks for the quick response Barbara, I may have inadvertently misled you. Your thoughts? In fact, they order … Good luck! I'm planning to overwinter onions from seed this year and I have a question about trimming the tops once the seedlings are transplanted into the ground. ", "If the cells you are using are small, less than 3 inches deep, you can so individual onion seeds in them provided you use seed starting mix. And thank you for the info you've presented - a big help!! ", "When transplanting to deeper containers, can I plant more than one seedling in each container? ", "Thank you for all of the useful information. I am driven to do it, which explains the evolution of these ten guidelines for growing onions from seed. I'm confused as to why sets are last years plants but seeds planted around the same time can grow as big as the sets, if i understand that correctly. They need to make quite a bit more green growth before they will grow big bulbs. I want to plant onions from seed directly in the ground. ", "Hi Barbara, newsletter. First, they should be big enough. It' will keep you up to date on new blog posts, GMO news, recipes, you know, all that kind of good stuff. 1) When should I start spraying diluted liquid fertilizer and what N-P-K ratio should I use? This is a fantastic site, so much info!! I would employ as many of these suggestion as possible. Organic Gardening Good luck! Here in this part of the Atlanta area we are in zone 7B, not far from zone 8A. I'm sorry to hear that you have onion maggots! Strain the solids out then drench the soil with the liquid. I had to run a heater to maintain the temps for germination, but now that I'm using lights only the temp ranges from between 64 degrees when the lights are off and 74 when they're on. To start onion seedlings indoors in February or March, fill a container nearly to the top with a seed starting mix and then make two furrows, about 1/2-inch deep, for the onion seeds. ", "Onions may deter grazing pests like deer and rabbits, which would be a good reason to grow them around the outside edge of the garden. This time of year, you can start seeds of "Japanese" onions, which winter over and bulb in late spring. Your seedlings will not become sets, but will proceed straight to bulbing in midsummer. I started my chives the same time as my onions. Theyve gotten worse everyday and its now ruined over half my onions and ive had to pull them. It's All About The Animals thanks", "Laura, this late in spring you can transplant little onion seedlings into any type of container at least 8 cm deep. i moved my onion seedlings out into the cold frame yesterday. I use a two-bulb florescent fixtures with new bulbs this year. Onion maggots are hard to get rid of. The wealth of information given by you has made me determined to grow onions from seed next year. Onions are one of my pet crops, and bulb onions are always the first vegetable I start indoors from seed. 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