How cold is your greenhouse overnight?

[thinktoomuchtoooften]

Desperately need to get seedlings off my window sills and outside but it’s still too cold at night. Today I bought a max/min thermometer for the greenhouse because I have no idea how much warmer it will be overnight than outside. Am a bit silly excited to find out in the morning!

In the south and I have a greenhouse thermometer that sends info to my phone. Have been avidly checking it! We are mostly staying above 5 degrees now, so I put out the peppers and tomatoes last night. All still fine this morning, despite it dipping below 5 for a bit. They can survive a briefing dip fine. Smaller seedlings are still in the house as the sluggy bastards murdered all my savoury the night I put it out.

Oooo now I want one of those! I’m in the Midlands and we’re still getting a bit of frost so I’m doubtful it will be warm enough in there yet

I have the switchbot brand. I am sure there are loads of others out there too. It keeps a few months of info and I could export and save if I read the instructions, but don't feel the need. I love a good graph!

5.2! So really not that much warmer than outside.. I wasn’t sure if there would be much difference between inside and out and seems there isn’t.
@HarryVanderspeigleI think I might need 2 thermometers, purely for research of course 😉

Just cover them up at night with fleece or bubble wrap if it's a cold night, makes a lot of difference.

Mine is unheated and I just close the door on cold spring nights. I move all my seedlings out there to slow them down and stop them getting leggy. I have lost a couple of cosmos and atriplex to snails, but strategic gravel and water is working for now.

I am in Glasgow and my tomatoes are in the greenhouse (and hardy seedlings like cosmos or marigolds). My greenhouse is sheltered though.

My dad's tomatoes are out in his greenhouse in the cotswolds which is a bit closer to you, and have been for a couple of weeks.

I'm in London & all my seedlings have been there for at least a fortnight, some for 3-4 weeks. I put them there as soon as the temperature overnight was forecast to be above 5 for about a week. It did dip down below that after a week but they were already used to it. The remainder went out after that week.