NORFOLK — The tapping, collecting, boiling and bottling has ended for most area maple syrup producers, and their verdict is in: Overall, 2019 was a sweet year. Most yields were at or above normal, Mother Nature provided near-perfect weather to entice the sap to run, and none of the sugar shacks went up in flames.

“We were inundated with sap,” said Maria Lafontan, owner with her husband, Vincent, of the family-owned Mountain View Farm in Kent, where 100 maple trees were tapped in mid-February.

She said a stretch of daytime temperatures in...