I would gladly appreciate this because i have all my stuff in my home and i cant enter it without freezing my xbox after 30 secs. Please Bethesda patch it ^^

They are not going to patch it, you better go find a fix for it yourself (there are plenty of threads on the subject), or go back to a previous save game and build the house again.

should i remove the greenhouse and never build it on any house?

The greenhouse has as far as I know only ever caused problems with Lakeview Manor, and even then it is only in some games. But if you are having freezing problems and have removed all the workbenches from Lakeview Manor, the greenhouse would be next on your elimination list. If it is the cause of the problem it should still be OK to build it at one of the other houses. But again keep a save before you start building the house, just in case.

I always make new saves every half an hour instead of overwriting a previous one, and yeah im gonna try that out

I'd have liked to see a patch for HF released in the next few days, but I can't see it happening anytime soon, if at all.