Pop up greenhouses & hardening off

Asked April 28, 2020, 10:07 PM EDT

Whats the earliest in the season by night temperature that I can safely move my hot weather starts into my pop up (not glass) greenhouse full time? The greenhouse is approximately 5' x 5'.

Multnomah County Oregon

1 Response

Thank you for choosing Ask an Expert for help with your tomato starts. The minimum temperature for growing-on your seedlings is 50 degrees.

Nighttime temperatures outdoors have been hovering around that level, for the past few weeks. Inside a greenhouse, even a pop-up, should be a few degrees higher. Take a look at the forecast for the next few weeks to make your decision.

Have a good gardening year,