Small greenhouse grow outdoor?

Just wondering if it was a good idea to put some potted plants or just one in a small greenhouse tent? My idea and question for this comes from wanting to keep insects out from past experiences and bieng able to cover them properly at night protecting them street lights and such. So the greenhouse tent should be about 5x5x3.

That is a pretty small space. It definitely depends on the strain and how you grow them. If you just let them do their thing... Just 1. If you are going to top, and train to keep them short and compact maybe 3 or 4

The problem is heat,on hot days you'll have to open it and the bugs will find it.

I would look for something bigger 10 by 20 & 12 feet tall with roll up sides that have a screen behind the roll up sides.the front and back would also have screened openings to allow plenty of air flow & keep the bugs out.a set up like this will keep most bugs out except spider mites. a fan on those extra hot days helps to keep the air moving & the humidity in check,the smaller the enclosure the harder it is to control humidity.