My wife has a small indoor greenhouse and she wants to grow a lot of different things from seeds. Lettuce, broccoli, flowers, strawberries, etc. But almost everytime the seeds sprout they immediately shrivel up and die.

The sprouts never get more than an inch before they shrivel into nothing. We're using Miracle Grow Seed Starting mix and Jiffy Seed Starting mix.

We've used the cardboard and plastic seed starter pots.

The first time we thought it was due to overwatering. The second batch we watered less and have the exact same results.

For our third attempt how can try again to actually get some hardy starts to transplant to the outside garden.