Vladimir, these results give me hope.
This april is colder than normal here. We had snow again last night, and another night of -2 C in the forecast this week. I've been monitoring the greenhouse temperatures and night time lows have shifted from 30's into 40's F in spite of the cold weather. My greenhouse has been running just 10 degrees F above outdoor temperature reported at the weather station. Compared to last year's figures, with a lot of mass mainly soil in large containers, and some water buckets, low temperatures were closer to 20 F higher inside.
The soil for my containers won't be available for a couple of weeks. Still I think I will move my tomato plants out there as soon as I can. Not ready to transplant but at least to get as much light as possible and start adapting to cold nights. They are just about four weeks old now.
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