I don't get it... My seedlings start fine and then die in a couple of weeks. I am mostly trying to start peppers but have a bunch of other stuff too.
I have a cabinet that I made into a seed starting area. I have two cool florescent lights about 3-6 inches above them that are on for about 15 hrs a day. I have a heater in the bottom to bring the soil up to about 80-85 degrees on top and 70-75 on the bottom. I water with rain water and a 10-52-10 mix to help them start and I use Supersoil for soil. I usually wait to water them till the top gets a little hard but is still wet on the bottom. I have them in the seed starter trays so I just add the water to the bottom and it soaks up.

More on the problem. Lets say my tomatoes, they came up and were doing just fine. I then go in one day and one of 4 is limp and starting to fall over. Then a few days later another... then another. The last one is going limp right now. I also had a pepper that I finally got to grow, and it just died. All about 2-3 weeks from popping up. I have some new peppers that I just started and I don't want it to happen to them, please help!!!

Hi! Im no expert but just heard about this on the radio. One thing that comes to mind is turning off the heat as soon as the first seedling emerges. The other tip which it sounds like you already follow, is to water when they get a little dry.

I was surprised to hear the advice to turn off the bottom heat as soon as you get a sprout. But it's worth a try!

Good luck!!!

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Originally posted by Brian Hy:
I water with rain water and a 10-52-10 mix to help them start and I use Supersoil for soil.

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ACK!!!!

You're not fertilizing two week old seedlings are you? Otherwise it sounds like damping off. Were you using clean trays and fresh mix? Did you have the trays covered?

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John - Zone 6

With damping off, the plants tend to rot off at ground level and fall over. It seems like these are actually wilting while they are still standing. Can you clarify this please Brian.
If it is damping off, it's a fungal problem and can be overcome by adding some condies crystals to water until the water is just slightly pink, then spray the surface with a misting spray.
I only ever feed seedlings with a half strength mix of fish emulsion fertiliser and i start them in a sand/coir/worm casting mix.

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The secret is the soil.

Thank you all so much for your fast response. I don't think it is damping off, the stem is still just strong, the leaves wilt around it while it is still standing tall. The reson that I was using rain water is because the site I got my seeds from says to not use tap water because of the clorine and other sh.. stuff in it. They say to use distilled water but I thought that rain would be pure too, no? It also said that because the peppers can take up to 100 days to sprout that you should use this mixture so the seeds will start faster. In rereading it, it did say to stop using it once the seeds start to come up. I do not have it covered because of the threat of damping, I just look at them daily. The plants aren't getting to tall, infact they might be to short, the true leaves were on the ground when it was doing fine. I will try to upload pics if I can. Do you think it's the water? I was thinking of Fish stuff, the site did say to use that too. Well, thanks for all the help. I need all I can get... All I know is, "If you plant it, it will usually grow".

OK, so the stems are strong, this rules out damping off. There's nothing wrong with rainwater, unless you are in a high air pollution area or an acid rain area. I'm thinking fertilizer burn or soil temperature. The wilting is what happens to plants that are getting way too much N. Though the fert you're using is extremely high in P, so that's not necessarily the problem. The symptoms would be different. (Thinking out loud here)
My other suggestion is the temperature of the soil and i just did a conversion to celsius (which i use) and it's pretty damn hot. Like, it's the temperature of the air at midday in summer. Way too hot for the root system i reckon. Yeah, i'm sold on it. Turn off or turn down the heat and i'm certain your problems will end. BTW, a temp of 15 deg Celsius (60 F)is plenty to germinate the most warmth loving of seeds, like corn and pumpkin, so i don't reckon you need to have the temp set so high to get that germination rate. Maybe get it down to about max 70 deg F.

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The secret is the soil.

What kind of pepper takes 100 days to germinate? I think you've been sold a bill of goods. I'd go with a standard potting mix or a custom one like Longy's, homemade. And get the heat way down, and don't worry about fertilizing seedlings. And rig a way to move your lights...flourescents won't burn even if they're touching, get them as close as possible.

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Dave
Even my growlights are getting restless!

Sounds like you are baking those seedlings. I put my seeds on a seed starting mat, and set the temperature to 75F. Once the seeds have germinated, I remove them from the heat mat, and put them under the grow light. Keep the seedlings about 2 inches from your light. Plants need to be cool at night, no lower then 65F. Never fertilize your seedlings until you get the first set of true leaves(second set of leaves). Once they get their first set of true leaves, then fertilize at 1/4 strength fertilizer. Air circulation is very important at this time also.