produce quick tips collara greens in the produce section fresh collards are seasonal and peak during the fall from november to april but they can be found in airtight bags avoid wilted or yellowing leaves or leaves with soft black spots rinse fresh collards under cold water to remove any debris and trim off the tough ends of the stalk and any brown edges of the leaves lengthwise along the stalk then stack and fold the leaves to chop evenly fresh collards can be stored up to five or six days in the refrigerator in an airtight container one cup of collards are low in saturated fat and cholesterol and contain only 49 calories per cup collards are beneficial in controlling ldl cholesterol levels collards have been in cultivation for more than 2,000 years and were a favorite vegetable in mediterranean and asian cultures and later among greeks and romans collard cuisine is a staple of southern soul food and in the united states collards were traditionally served with ham hocks nutrient value collards have become a favorite winter garden crop and a centerpiece of holiday meals collards your commissary