Can you cool down a greenhouse?

[GaiaTamBlack]

If I build a greenhouse and want to plant turnips will they more easily overheat in summer due to the +5 bonus of a greenhouse? If so, can I add trapdoors and open them to cool down for example?

[idiomcritter]

the game doesn't test if the (trap)door is open or closed.  

what i've done, is select a single block in the roof, and poke a hole to the sky.  

I'll plug the hole with a hay bale when the greenhouse effect is needed again.

and welcome to the forum

[GaiaTamBlack]

Thanks, not the prettiest solution but what works works