If Washington wished to know a thing about practical farming, he usually had to find it out for himself.
This state of affairs accounts for his performing some experiments that seem absurd.

Thus in the fall of 1764 we find him sowing "a few Oats to see if they would stand the winter." Any country boy of to-day could tell him that ordinary oats sown under such conditions in the latitude of Mount Vernon would winter kill too badly to be of much use, but Washington could not know it till he had tried.
In another category was his experiment in March, 1760, with lucerne.
Lucerne is alfalfa.

It will probably be news to most readers that alfalfa--the wonderful forage crop of the West, the producer of more gold than all the mines of the Klondike--was in use so long ago, for the impression is pretty general that it is comparatively new; the fact is that it is older than the Christian era and that the name alfalfa comes from the Arabic and means "the best crop." Evidently our Farmer had been reading on the subject, for in his diary he quotes what "Tull speaking of lucerne, says." He tried out the plant on this and several other occasions and had a considerable field of it in 1798.

His success was not large with it at any time, for the Mount Vernon soil was not naturally suited to alfalfa, which thrives best in a dry and pervious subsoil containing plenty of lime, but the experiment was certainly worth trying.
In this same year, 1760, we find him sowing clover, rye, grass, hope, trefoil, timothy, spelt, which was a species of wheat, and various other grasses and vegetables, most of them to all intents and purposes unknown to the Virginia agriculture of that day.
He also recorded an interesting experiment with fertilizer.

April 14, 1760, he writes in his diary: "Mixed my composts in a box with the apartments in the following manner, viz.No.1 is three pecks of earth brought from below the hill out of the 46 acre field without any mixture.