Here in southern Victoria, Oz, I planted out into one of my raised veggie gardens, some White Widow seedlings in early September. Thinking that at 2-4 feet in height, they should be secure enough from nosy neighbours. These are my girls at 16 weeks (they always do well for me, at least in the past) and blimey, the tallest one has to be at least 5 feet high! There are 5 plants here. It will be at least Autumn before they are ready to harvest. Apart from feeding and watering, I have done nothing to the plants as I just wanted to see how they would do on their own.
I didn’t know about autoflowers, so now I have a few Blueberry Autoflowers in peat pots waiting to sprout. These I will grow in pots.