Susan,

Just went looking for Weevily Wheat, but something's missing. The version I know has some of the same verses, but it also has a chorus:

Weevily wheat, my true love's posy blowin'.
Weevily wheat, I'm goin' back to sea.
Weevily wheat, I left you fit for sowin'.
When I come back, a loaf of bread you'll be.

[BTW, while I'm writing, anybody know what "posy blowing" means?]

There's a variant, built on "wheat-in-the-ear" instead of "weevily wheat". I'm not too clear about it, but it should contain a chorus with the last two lines of that chorus in it. There's a version of that in Kipling's _Captains_Courageous_, but it isn't recognizably singable to the "bake a cake for Charley" tune. Possibly Kipling made it up, but other songs in that book seem genuine.

Couldn't find anything under [fit for sowin] in the DT. More words, anybody?