Do all auto flowering plants grow short like lowryders?
PEACE BROTHER. It is a trait of the auto flowers that they are short by stature but you can get a few that will grow to 3ft I've read. The thing is that the crosses that they are crossed with may give them a bit more height than the lowrider, but for the most part they are all going to get about 1-3ft max. There are exceptions to all rules as you well know and all things don't end up like they are supposed to (ie. two 6ft people having a child that grows up and is only 4'11).
There are things to do to make sure that they are short, ie. LST, or
topping (only if you have a height restriction because it is not reccomended by the breeders who developed them.) So basically, since you are in control of the enviroment you can do what best fits you. The thing is is that they (the co.'s and breeders) that it will diminish your yield if you top, but if you are only going to grow for personal reasons then you wouldn't care. Now if you are growing to get money then you would have to make sure you have a lot of flowers in a small space and you would SeaOfGreen them or ScrOG them.
I am no expert and I only offer the ideas that I have read because I too have found the auto thing recently and prior to have never heard of it. You may not have read it in a minute because the thread is sooooo long, but if you look on the first page when KB started this you will find mostly all that you have asked. And if not post again and I'm sure that you can get the answers ( you may have to endure some BS along the way becasue someone will find the question stupid, but always remember THERE IS NO SUCH THING AS A STUPID QUESTION ONLY STUPID PEOPLE WITH STUPID ANSWERS) and if I can I will answer it to the best of my ability if need be.
PEACE