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What could be wrong with my seedlings?

Hi! First time gardener here! So, I was bored and kind of worried during quarantine so I decided to start a vegetable garden, but since I've never done this before, I'm afraid there's a lot I still don't know and many things will go wrong. I've read A LOT before even ordering the seeds, but still...
So, these are tomato and spinach seedlings. I presprouted all of those using the paper towel method and then potted them using a mix of coco coir, perlite and vermiculite (a recipe I found on a gardening blog). I didn't have grow lights and didn't want to spend so much money, so I improvised a mini greenhouse with old shelves and plastic wrap and placed it outside in the backyard in a spot that gets sunlight all day long when it's not cloudy and raining (we have days with 10 hours of light). I'm now living in the southern hemisphere and we are on late winter here, but the temperatures have been kind of warm for a winter, around 59°F (15°C) to 77°F (25°C).
My judgment is that they don't look really healthy. The leaves are curling, the stems on the tomato seedlings are bending, I'm not sure if noticeable but some of the leaves have areas that look lighter, like slightly yellow, and many of the seedlings still have the seeds stuck to their leaves. I also noticed that two of the seedlings don't have their tips (look at the 2nd pic), so I'm pretty sure a bug is eating them. To solve this I was planning to make individual mini greenhouses for each pot, but not sure if this will work.
How do you guys think I can save my little babies?
Thanks in advance!
Hazel

Posts

  • JennyJJennyJ Posts: 10,576
    They look OK to me. Those are the seed leaves, and they often wither and fall off after the next few leaves arrive. It's normal for some of the seed cases to stick like that. Handling them at the teeny tiny stage might have caused a little bit of damage but they'll most likely outgrow it. For next time, those kinds of seeds will germinate fine in a pot or tray of compost, and are usually separated out when they've grown a few pairs of leaves and are easier to handle.
    And welcome to the forum!
    Doncaster, South Yorkshire. Soil type: sandy, well-drained
  • JennyJJennyJ Posts: 10,576
    Oh, here's another thought. Did your coir have any fertiliser in it? If not, they might need feeding when they get a bit bigger. I would use a general purpose liquid feed diluted half-strength to start with, but I'm sure someone else will be along later and might have a better idea.
    Doncaster, South Yorkshire. Soil type: sandy, well-drained
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