Perennials forum: Untitled

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(Zone 3b)
Apr 17, 2019 2:27 PM CST
Hello! I planted some Alyssum-Gold Dust AKA Basket of Gold AKA Aurinia saxatilis about 5 weeks ago in a peat pellet container. It's in my 65 degree basement about 6" under a 50 watt LED light on a heat mat. I did have the lights closer but it seemed like it was stressing the little seedlings. I removed the lid after they emerged. The problem is that it seems like they are stunted. They've developed good little leaves, but the stems are yellow and terribly thin. Many of them are flopped over. None are more than about 3/4" tall. I keep them evenly moist with a mist sprayer daily and drip water between the pods without allowing standing water. Last week I tried an experiment adding a few granules of plant food to 1/3 of them and some finished compost between all the pods to let them soak up some nutrients. No improvement with the stems. My vegetable, herb, and purple coneflowers all seem to be doing great under identical conditions. The same thing happened when I tried them last year, until I eventually moved them outside for more sun and they dried out from neglect. Is it inadequate light? I'll try to add pics later
Any suggestions would be appreciated. Thanks!
(Zone 3b)
Apr 17, 2019 4:40 PM CST
Meant to put a title in there. Sorry.

Here are the pics.
Thumb of 2019-04-17/BigBear/c27237
Thumb of 2019-04-17/BigBear/ae3f58

Somerset County, NJ (Zone 6b)
Apr 25, 2019 7:07 PM CST
I have marigolds seedlings that acted like these. I thought not enough light. I was able to put them outside most bounced back. Some died. Then I thought maybe seeds weren't good. Probably combination lack of light and too damp?
Northern NJ (Zone 6b)
Apr 26, 2019 6:55 PM CST
What you can do is try transplanting them into a deeper pot just beneath the first set of leaves or you can sink the pods into a taller but not much wider container. Alyssum is a ground hugging plant and won't develop stems like your other seedlings. Finally I've been told that you are suppose to take seedlings off the heat mats once they germinate to slow down growth and prevent overstretching. I can't comment on the wattage of the LED lights. Also, I can't tell if the thin stems are damping off or if it's the root. It looks like you can still get something out of it.

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