6/20/2023 0 Comments Seedlings falling overOnions can be transplanted into pots and containers, whether for temporary purposes or as their final position. (Image credit: Alamy/Laurie MacBride ) Transplanting onion seedlings into containers The onions can be planted in rows 12-15 inches apart. Either way, seedlings should be transplanted 1 to 1.5 inches deep and each transplant needs to be 3 inches apart. The method of transplanting will differ depending on if your onion seedlings are in trays or modules. As they acclimatize, you’ll eventually reach the milestone of leaving them out overnight. She explains: ‘Introduce them to outdoor temperatures a little bit each day, adding time as you progress, for about 2-4 weeks. She hardens them off over an extended period. Jen McDonald, certified organic garden specialist and co-founder of Garden Girls, normally starts her onions indoors 12-14 weeks before the last frost date for where she is based in Houston. This attunes the seedlings to colder temperatures in preparation for the big day when they are transplanted outdoors. ![]() Once the small onions are ready for transplant, they do need to be hardened off first. My onions were typically sown during January in a heated polytunnel and then would be planted out in the vegetable garden around three months later. Onion seeds can be sown in either trays or modules – I tend to prefer using modules as it makes the process of transplanting the seedlings simpler. It is suggested that you lay snail pellets around the plants on the same day they are transplanted to the garden in order to defend them from pests.(Image credit: Alamy/ Juan Jose Alvarado) How to transplant onion seedlings outside The most significant issue is that slugs, snails and aphids harm the plants when they are young and vulnerable seedlings. This usually implies that they should be planted in the middle or rear of the border.Ĭosmos are a relatively hassle-free species to cultivate, with few health or pest issues if grown in the correct way. The Cosmos may grow as little as 1ft tall to 3ft high depending on the type. BloomingĬosmos are appropriate in cottage gardens where they create lots and lots of blooming flowers. Cosmos seedlings should be spaced 12 to 15 inches apart, and thick mulchshould be applied to the ground to aid in water retention. If your soil is poor, add compost to improve its nutrient levels. Planting them in the garden is best done in a warm, sunny location with adequate, moist soil that is well-drained. This mimics weather conditions in order to encourage the plant to produce a thicker stem and better withstand this kind of environment.Ĭosmos seedlings are sensitive to temperatures below 57.2 Fahrenheit (14☌) and can be damaged by frost for prolonged periods of time. The second approach is to utilize a fan and blow a gentle breeze toward them. The first method is to brush your hand against the leggy cosmos seedlings once or twice a day, which provides the plant with some resistance. ![]() So what can we do to force these leggy seedlings to grow stronger and sturdier? There are two ways: So we’ve established that l eggy cosmos seedlings are not sturdy enough to withstand things like natural weather such as strong winds and rain. This is absolutely fine, I just continue to increase the height of the heat lamp whilst making sure that the source is still 2.5 inches above. You may find that you will need to continually increase the height of your artificial light as the cosmos seedlings grow taller. Remember if you have opted for artificial light, it is important that your light is close enough to the seedlings so they can soak up as much of it as possible for photosynthesis. If you are concerned about not being able to provide them with enough natural light, you can supplement them with artificial fluorescent bulbs placed within 2.5 inches of your seedlings. Without adequate sunlight, you will put your seedlings under unnecessary stress, which will, in turn, cause them to become leggy or worse, wilt and die. So the absolute number one focus needs to be that you are ensuring that your seedlings are getting enough light.
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