What is a "Squitchen"?

I found four conjectures:

Squitchen—apparently a coinage by Taylor. “Possibly it is a dialect spelling for the obsolete substantive switching, a switch or stick” (Johnson†).

_{Howard Mumford Jones, Ernest E. Leisy and Richard M. Ludwig, editors (1952). Major American Writers, volume 1, page 21. New York: Harcourt, Brace.}

_{† Thomas H. Johnson, editor (1939). The Poetical Works of Edward Taylor. Rocklands Editions.}

Squitchen, variant of scutcheon ‘piece of bark used in grafting’ (?)

_{Donald E. Stanford (1960). The Poems of Edward Taylor, page 367. Yale University Press.}

Altered form of quitch, a species of couch-grass or weed, or a variant of escutcheon, a shield depicting a coat of arms.

_{Paul Lauter, editor (2006). The Heath Anthology of American Literature, volume 1, page 461. Boston: Houghton Mifflin.}

Of these conjectures I think “switch or stick” is most plausible, since in the poem the word is parallel to “wand” and needs to be something that God might shake in his hand. (He might make a blade of couch-grass quake like an aspen leaf with his frown, but that simile is in the next sentence and is a separate figure.)

According to Collins dictionary, "squitch" is an archaic word for "grass":

squitch
in British English
noun
archaic
couch grass

In which case "squitchen" feels like a reasonable grammatical formulation for "a single blade of grass". This also makes sense in the context of the line.

In this usage, “squitchen” can be understood as “a small twig or switch” — something you could shake in your hand, and therefore making the world shake like that is emphasizing the power of Almighty to move something enormous as easily as you would a little stick.