Tomato Hardening

Question

I have grown tomatoes and eggplants from seed under artificial light. I attempted to harden them off once before when they were 4 inches high. They became sunburned. Now after two more weeks in the shade outside at 70 degrees (average temps in the day) and around 45 at night, I am scared to put them out in the sun again. Can you provide any tips to make my second try more safe for my plants?

Answer 1

Move them slowly into the sun. They need to build up a tolerance. The first day, just do a half hour in the sun or so and work them up from there. This article will help too:
https://www.gardeningknowhow.com/garden-how-to/seeds/how-to-harden-off-your-seedlings.htm