Why are our homegrown tomato plants' leaves turning yellow while we are hardening them off? We've been putting them outside in the sun for a few days. But the leaves seem to be yellowing.
Tomato Plants Yellowing
Certified GKH Gardening Expert
When hardening off seedlings you gradually introduce them to the sun. You start off by placing them in a sheltered, shaded area and then little by little expose them to the sun.
For more information on how to harden off your seedlings, please visit the following link: