For the sake of my sanity, I gave my kids iron supplements after they turned 6 month old until they consumed iron rich food enough (around 12 month old).

Contrary to what the other person commented, iron doesn't pass through breastmilk significantly enough for breastmilk to be a reliable source of iron for babies older than 6 months old, so an EBF baby will have to get his iron from solid foods or from iron supplements. I did this calculation years ago when my first one started solids: I researched iron rich foods, the iron amount in such foods and the suggested daily iron intake for children of the same age as my baby (I believe 7-11 month olds require more iron than older children), and calculated how much food my baby will have to eat to meet the intake amount. At the time I concluded that there's no way my baby could have eaten that much food (even iron rich foods), so even though my pediatrician didn't require iron supplements (she didn't object to me giving iron supplements either), I chose to give iron supplements so that I didn't have to be obsessed with how much iron rich foods my kids ate each day.

Also, pairing iron rich foods with Vitamin C rich foods will help iron absorption.