Greenhouse for auto during night of 10°C

As stated it’s strain dependent. Low temps will most likely stunt your plant or limit its growth. I’ve had outdoor plants withstand 2 C nighttime temps for 2 weeks. That being said if you don’t want to add a heater to your little greenhouse at night you could try and get your hands on some bricks. Bricks act as a thermal mass and if you place some in your greenhouse they can absorb the heat from the sun during the day and slowly release the; heat back during the night.