depends wat strain ie indica or sativa hybrid or dom the sativa/indica is but about week 5-7 depends also on weather outdoor typically takes about 10-20% longer
yep you sure can they may pre mature yellowi if you notice that by week 6 flowering add some balanced nutient source high in nitrogen fox farm veg formula will do the trick and its like 10-15 bucks depending where your at and can use leftover on veggies you got going