When do I plant my Tomatoes in the greenhouse

Good morning I was wondering when I can plant my tomatoes and cucumbers in the greenhouse?? My greenhouse ( Doris) does not have any heating and according to my max/min thermometer the night time temperature this week is around 4-5 c I think this is way to cold to plant out. At the moment I have my plants in 5 inch square pots which I place out every morning and then bring back into the house every evening to avoid any damage that the cold nights may cause

 

Needs to be 10 c and above. It wont kill em but they don't really like it below that

 

Actually I am always a bit confused - the tomatoes are getting the same low temperature either in greenhouse or out. So what is the point keeping them in pots in greenhouse?

 

If you got no where warmer to keep em overnight then you may as well plant them out in the greenhouse, the soil should be warm enough in there

 

@blacktulip you would be amazed at the difference in some plants. A few years ago I took pics of the same peppers, one grown in and the other out and the difference not being grown in natural elements (wind, etc) was amazing.

Also, the more mass you have in the greenhouse, the more heat retention over night. I have plants that I will need to quick shuffle from the unheated greenhouses into the heated one on a few nights over the next week or so but that is because the temps are going to drop below freezing.

 

I bring them into my house which is warmer than the greenhouse I don't leave them outside the greenhouse that would just be silly lol

 

@blacktulip we are talking about growing in a greenhouse during the regular growing season as well as the extension of the season at either end.

The pepper on the right was grown in the greenhouse. Same dirt, seeds, food, water. I brought it out to take a pic and sow the comparison.

 

I see. Thanks. I wish I have space indoors for my plants... but have not. I have to leave my toms/peppers in the greenhouse.

 

These are my tomatoes and cucumbers I know there's to many for a small greenhouse but I'm growing a few for my Mam and a couple for my girlfriends grandmother

 

I think this is the usual problem.
Sowing seed or buying plants too early, the later ones always seem to catch up the early ones.
It's a juggling act I know, because we never know how warm/cold the spring is going to be so I always wait and bide my time, and totally ignore seed packet sowing dates.

 

I think your outdoor pepper is probably much better than any you are likely to grow out doors in the Uk.
I've tried them out on the allotment on quite a few occasions with spare plants and they are usually stunted and crop one unripe pepper at the most.

 

@pete I find this interesting as you have a much longer growing season than we do. That's why I had hoped having greenhouses and inside growing areas would allow me to hurdle above my growing zone.

We're still weeks away from last frost and I've got tomatoes in the greenhouse that have blossoms on them. Hope I didn't ruin things by being impetuous.

 

Early days ,Moneymaker and Alicate

 

I'm guessing we may have a longer growing season but probably a cooler one, less defined maybe than yours.
Night temperatures are always a big thing, I believe, in outdoor growing, and we can have cool nights even in mid summer.

 

Cucumbers.