How Do You Acclimate Tomato Plants

Start slowly. For the first day, set plants outside in the shade, next to the house, or in a protected area for an hour or two. … Raise exposure. … Monitor seedlings. … Finally, leave tomatoes out overnight.

How do you acclimate tomato plants outside?

1. Find a sheltered place outside where the seedlings can sit in filtered sunlight, out of the wind. …
2. Take your tomato seedlings outside and leave them in this protected place for a few hours on day one.
3. Bring them back inside.
4. On day two, leave them outdoors for a little longer.

How long do I need to harden off plants?

In general, the process of hardening off will take about one week, and sometimes up to two weeks if the weather has an unexpected and dramatic drop in temperatures. If your region has frost, you should time your seed starting in spring so the seedlings can start to go outside after the last frost date.