The Mount Vernon estate in the old days lacked only one quality necessary to make it extremely productive, namely, rich soil! Only ignorance of what good land really is, or an owner's blind pride in his own estate, can justify the phrase "a good loam." On most of the estate the soil is thin, varying in color from a light gray to a yellow red, with below a red clay hardpan almost impervious to water. To an observer brought up on a farm of the rich Middle West, Mount Vernon, except for a few scattered fields, seems extremely poor land. For farming purposes most of it would be high at thirty dollars an acre. Much of it is so broken by steep hills and deep ravines as scarcely to be tillable at all. Those tracts which are cultivated are very susceptible to erosion. Deep gullies are quickly worn on the hillsides and slopes. At one time such a gully on Union Farm extended almost completely across a large field and was deep enough to hide a horse, but Washington filled it up with trees, stumps, stones, old rails, brush and dirt, so that scarcely a trace of it was left. In places one comes upon old fields that have been allowed to revert to broom sedge, scrub oak and scrub pine. One is astonished at the amount that has never been cleared at all. Only by the most careful husbandry could such an estate be kept productive. It never could be made to yield bumper crops.
The situation confronting "Farmer Washington" was this: He had a great abundance of land, but most of it on his home estate was mediocre in quality. Some of that lying at a distance was more fertile, but much of it was uncleared and that on the Ohio was hopelessly distant from a market. With the exception of Mount Vernon even those plantations in Virginia east of the Blue Ridge could not be looked after in person. He must either rent them, trust them to a manager, or allow them to lie idle. Even the Mount Vernon land was distant from a good market, and the cost of transportation was so great that he must produce for selling purposes articles of little bulk compared with value. Finally, he had an increasing number of slaves for whom food and clothing must be provided.
His answer to the problem of a money crop was for some years the old Virginia answer--tobacco. His far western lands he left for the most part untenanted. Those plantations in settled regions but remote from his home he generally rented for a share of the crop or for cash. The staple articles that he produced to feed the slaves were pork and corn, eked out by herring from the fishery.