From Charles Clay
Sep. 5. 1810.—
the boy brings you Som Seed of the late invented Hay Rye,—in its wild State it is generally found on a light rich Soil by the Sides of Rivers Creeks &c Yet from the Single experiment I have made, with it I apprehend it will thrive very well on any good Clover Soil.—this is the fourth year it has Stood Where you Saw it,—& has every year increased in quantity, being at first Sown Very thin, in the month of March,—but I am inclined to think the fall is the proper time for Seeding it, & then it would probably produce Seed the next Summer, which it does not when Sown in the Spring.—yours respectfully
RC (MHi); addressed: “Tho. Jefferson Esqre Bob”; endorsed by TJ, with day of receipt trimmed or omitted. Recorded in SJL as received 5 Sept. 1810.