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Seedlings yellow/brown

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Seedlings yellow/brown

Post  Puddles on 2/23/2013, 10:59 am

Hi all.. my tomato seedlings are on a heat mat under a light for about 16 hours a day. Some of the leaves are yellowing and or brown, they all receive the same amount of water any suggestions?

Here's a couple of pictures..
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Re: Seedlings yellow/brown

Post  RoOsTeR on 2/23/2013, 11:09 am

Welcome to the forum! To start, since they have sprouted you should remove the heat mat. Also, what are you using as far as planting medium to begin your seeds in?


Last edited by camprn on 2/23/2013, 11:14 am; edited 1 time in total (Reason for editing : corrected spelling)

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Re: Seedlings yellow/brown

Post  camprn on 2/23/2013, 11:17 am

Hi and glad you\'re here to the SFG Forum. I agree with Rooster. The heat mat is for getting the seeds to sprout and then the seed trays should be removed from the heat. I echo the question, what type of growing medium the seedlings are in?

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Re: Seedlings yellow/brown

Post  quiltbea on 2/23/2013, 1:02 pm

Puddles.....Welcome.
I agree with those above. Remove the heat mat.
Once seedlings sprout, they do best in temps in the 60-65"F range to get started. Yours are getting too much heat.

Edited to add: Your pics didn't show up. As a new member, you have to wait a week before they work.
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Re: Seedlings yellow/brown

Post  Puddles on 2/23/2013, 3:49 pm

Thanks for the advice... there off the mat!

Seeds were started in ummm... batch of vermiculite, peat and a lil sand, potted up into six packs with soil from potting table. Potting table started it's life as a table height bed with mortar mix tubs filled with MM for my mom. Have had a few 4x10 boxes for a couple years... squirrels, birds, rabbits and bugs enjoy the fruits as much or more as we do.
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Re: Seedlings yellow/brown

Post  camprn on 2/23/2013, 3:50 pm

Good job getting them off the mat. You may want to give them a weak plant food solution for a wee boost.

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