The leaves of fresh dill should look feathery and green in color. Dill leaves that are a little wilted are still acceptable since they usually droop very quickly after being picked.
Place the dill leaves in a bowl full of water and just swirl the leaves around, this should remove all the dirt and mud out of the leaves. Alternately you can hold the dill leaves under running tap water and allow all the dirt and mud to just wash away (make sure the water pressure is not to high). Once cleaned, pat dry the dill leaves
Wrap clean Dill in a paper towel or clean dishcloth and place in the refrigerator. Dill weeds stored this way will stay fresh up to 2 days.