I have just built a 2.4 x 1.5 x 2m high hothouse. Our daylight hours are at minimum 10. Night temperatures can fall to 4 or 5 Celsius in mid winter. Daytime temperatures rarely fall below 14 c but mostly a few degrees warmer at least.
Will I need to heat and or add light to successfully grow tomatoes in my little hothouse.
Any advice would be gratefully received.