Mitch Sisskind offered a prize for an explication of this poem:
Earth took of earth
Earth with woe.
Earth other earth
To the earth drew.
Earth laid earth
In earthen trough.
Then had earth of earth
I offered two, and (astonishingly) won a book. Below, my second take on the poem:
Actually, here's an alternative take. The first four lines are, as before, about procreation. However, the "earthen trough" is a vagina rather than an urn; 5-6 describe coitus; what the poem is saying is that after their childbearing years, the couple had prodigious amounts of sex (hence "earth enough").
To which Deborah Overmeyer aptly responded:
"Come to my dry den and we'll moisten the cave of nakedness for thee, O sultan."-- Mac Flecknoe