Adding ventilation to a fly away plastic greenhouse

Any ideas on this other than leaving the flappy door open?

If I leave the door closed it cooks everything and all the moisture disappears from the pots and trays pretty rapidly and if I leave it open it seems pretty pointless even owning it!

Would love to get a glass greenhouse but not got anywhere to put it at the mo.

 

I fitted a couple of 12" fans driven by a solar panel to mine last year:

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Helped a bit but ultimately it was so cold & damp last year nothing much came out of the blowaway & it ended up in the bin..

 

It may seem pointless to leave the door open but you will be surprised how much of a difference a plastic green house can make. I overwintered a standard bottle brush plant in a pot with door open all the time. The previous one had died in the garden unprotected.

 

Hmm, I suppose it does keep the wind chill factor off. Never thought of that!

 

Is that done with computer parts? I can see a molex in there, ha.

 

Yes indeed - along with the other standard engineering tools of cable ties & gaffa tape...