As this article was written primarily for farmers and others with little or no training in botany, it may be fitting to commence with a few notes on the plants which are referred to as clovers. All the true clovers are species of Trifolium (from the Latin, tres— three and folium—leaf). Because of this, the terms clover and trefoil are somewhat loosely applied and some of the yellow-flowered clovers are commonly but incorrectly referred to as trefoils
