Seedlings are being eaten.

[Grannys_Garden]

Hello everyone,

I grow my seedlings every year with no problems. This year however, I am experiencing the tops of my seedlings being eaten off as soon as the leaves appear.

I make my own seedling mix. This year I was forced to make a change to my mix. I could not find regular compost and instead substituted mushroom compost.

Have any of you had this problem? or do you have any idea what is eating the tops off my seedlings.

Thanks