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Zinnia Seedlings Dying - PLEASE HELP!

Nashville, TN(Zone 7a)

Hi -

I have grown zinnias from seed for the last couple of years with great and satisfying results. I start the seeds in Jiffy pellets under grow lights and have never had a problem until now. This year, the seedlings came up as normal, but when they're about 2-3" tall, they fall over and die! I've lost about 80% of all my seedlings. I thought I had been careful to avoid overwatering, which could cause damping off.

Any ideas of what could be causing this? Is it too late for me to plant a new batch of seeds??

Thanks for any advice!


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