But the variety was not well adapted to Virginia and ultimately he gave it up.
In this period he also tried Siberian wheat, put marl on sixteen square rods of meadow[4], plowed under rye, and experimented with oats, carrots, Eastern Shore peas, supposed to be strengthening to land, also rib grass, burnet and various other things.

He planted potatoes both with and without manure and noted carefully the difference in yields.

At this time he favored planting corn in rows about ten feet apart, with rows of potatoes, carrots, or peas between.

He noted down that his experience showed that corn ought to be planted not later than May 15th, preferably by the tenth or perhaps even as early as the first, in which his practice would not differ much from that of to-day.

But he came to an erroneous conclusion when he decided that wheat ought to be sown in August or at the latter end of July, for this was playing into the hands of his enemy, the Hessian fly, which is particularly destructive to early sown wheat.