The term 'Biblical Weeds' refers to two plants mentioned in the Bible, Tares (also known as darnel) and Cockle. Tares is a weed that grows among wheat and other grains, and is difficult to distinguish from them until the grain heads mature. Cockle is a weed that grows among wheat and other grains, and is easily distinguished by its white or pink flowers. Both of these weeds were mentioned in the Bible as being a nuisance to farmers, and were used as symbols of evil in parables.