That's nearly impossible to say. Minimum yield all depends on your conditions and if it is brought to fruition. Obviously, if your plant dies along the way you would get 0 oz.
What's with all the cloak and dagger shit? Somebody who knows ought to just answer the kid's question. However dude who said it all depends on the variables is completely right. Ferts, water, soil, and light will all play major factors. For my money I would guess your in a situation where nurture will be more important than nature so to speak. Also just as an aside Big Bud X Cal Orange is really kickass.
Hi I am not sure how much you will get out doors, but I am growing Cali Orange indoors at the moment. This might give you an idea of the kind of yeild to expect. I was asking the same question for my grow! http://forum.grasscity.com/grow-journals/150513-harvesting-advice-needed.html Hope This Helped?