Worm Moon, Sap Moon

March is the month of the Full Worm Moon. The Full Worm Moon was given its name by the Algonquin tribes from New England to Lake Superior.

At the time of this spring Moon, the ground begins to soften and earthworm casts reappear, inviting the return of robins. In some regions, this is also known as the Sap Moon, as it marks the time when maple sap begins to flow and the annual tapping of maple trees begins.
-Farmer's Almanac