Its the beginning of autum here in South Africa and I'm trying to grow some lettuce and spinach in a home made 1 metre grow bag. I'm using potting soil that i washed through 80% shade netting. The soil drains very well and holds moisture too. The bags are under 40% shade netting so the seedlings dont get burnt but the seedlings sprout and a few dys later the ends/tips of the leaves look like they drying or something. next day the leaves are shriveled and dead but the roots and stem look great! I though it was sunburn so I put up the shade netting, but the first seedling to do this was on the south side of the grow bag which gets very little light because of a wall behind the bag. Please see pics attach. I am so confused! It starts with the tips or edges and the next day the leaves are dried up and shriveled. Roots and stem look good. Please help
