Continuing on with our discussion on native bees being used in a green house effect and possibly having a T junction as suggested by @stevo I messaged Sugarbag Bees on facebook about having native bees in a greenhouse type of setup. Below is their response that I thought other’s might be interested in. Nearly worth a new post for all the bee discussions. “Hi Kate, You can keep the hives in the greenhouse so they are confined there. Or you can add a T piece to the entrance of the hive. Insert a tube to one side of the T piece that perforates the wall so that the bees can forage inside the green house or outside on the environment. You can use this to encourage them to forage where you want. E.g. you can close the end that leads to the outside if the bees are not discovering the flowers inside. You can open it again if there are not many flowers available inside. You may find that when you first introduce the hive, some of the older foragers will not accept the space and try to escape. But as these bees are replaced by younger ones (this process is continuous, it starts immediately and is complete in about 3 weeks) they will accept the space and forage more effectively.” So it sounds like I could do something with the bees and I like the suggestions made.