Coppice said:Bees fly over (not into) buildings in my experience. Oh the occasional explorer might, but enough to pollinate, no.
If you want them pollinated I fear you will be using a paint brush, or setting your plants out of doors.
dyzzypyxxy said:It really depends upon what you're planning to grow in the way of vegetables, Thomas. Some will pollinate themselves with just air movement.
When the weather's cold enough that your plants wouldn't grow and bloom outside, it's a good bet there aren't going to be many honey bees out foraging, either.
Much more important in winter to keep the temperature of your greenhouse up, so that your plants keep growing and blooming.