Any concerns with these species in unheated greenhouse?

[Brian]

I know you say you are not planning to heat or insulate the greenhouse. However insulation is very inexpensive and not that much effort to put up for winter. Long run I suggest save up for running electricity to the greenhouse, I have never regretted it.

[el48tel]

Please don't accuse me of being critical ... this question is being asked genuinely. I'm told that cacti and succulents do not cope with hot dry stagnant air ... nor do they like cold damp stagnant air. I'm told that the best way of solving both of these conditions is to use a fan unit. So why not buy a low heat fan unit?

[habanerocat]

Please don't accuse me of being critical ... this question is being asked genuinely. I'm told that cacti and succulents do not cope with hot dry stagnant air ... nor do they like cold damp stagnant air. I'm told that the best way of solving both of these conditions is to use a fan unit. So why not buy a low heat fan unit?

Best solution is to open the door and windows. If you're not around all the time to do that, then automatic vents and fans are the only alternative.

[el48tel]

Please don't accuse me of being critical ... this question is being asked genuinely. I'm told that cacti and succulents do not cope with hot dry stagnant air ... nor do they like cold damp stagnant air. I'm told that the best way of solving both of these conditions is to use a fan unit. So why not buy a low heat fan unit?

Best solution is to open the door and windows. If you're not around all the time to do that, then automatic vents and fans are the only alternative.

Habanerocat ..... exactly my set up .... but auto vents might not be for all

[Aiko]

Best solution is to open the door and windows. If you're not around all the time to do that, then automatic vents and fans are the only alternative.

Not really needed from my experience. I only visit my greenhouse about once a week. I have four top windows open all the time between late March and November. I have two big bricks on each side of the panes to keep them open. And during warm weeks I also open up the main door (but put a mesh in front to prevent birds from hopping in). Only when storms might appear, I close the windows on the wind side.