I have never tried growing garlic. Garlic is easy enough to buy in stores. It is around $3 a pound here for the common variety, and probably less elsewhere in the US for basic garlic. Make sure the garlic you buy looks fresh though and not black or discolored. I keep mine in the fridge at home even though refrigeration is not necessary if you keep it cool and dry and use it within a few weeks. Over 80% of garlic sold in the US was grown in China. US grown garlic costs more, some of it is exotic varieties that are $12 a pound and up.