Most breastfed babies will have sufficient stores of iron until the middle of the first year. (breastfeedingtoday-llli.org)
Depending on how much milk you're producing and how interested your child is in solids, your need for a supplementer may end shortly after your child starts solids around the middle of his first year, or may continue for some months beyond that point. (breastfeedingtoday-llli.org)
Yet today, the World Health Organization (along with every national health organization I can think of) recommends starting solids at the middle of the first year. (breastfeedingtoday-llli.org)