Garlic needs to be planted in the fall and harvested the next summer. That being said, I have been known to plant garlic cloves any time I had some with such big sprouts they're not good for cooking. The greens will ususally come right up (except in the worst heat of summer). These are delicious in stir fries. Last year, my spring planted garlic went dormant in the summer and came back up in the fall. I am going to see if they are harvestable come June or July.