March’s Full Worm Moon

Why is March's full moon called the Full Worm Moon?

March full moon is the Worm Moon

As the temperature rises and the ground thaws, earthworm castings appear, heralding the return of robins. Thus the origin of March’s full Moon name, the Full Worm Moon.

Northern American Indian tribes know this Moon as the Crow Moon, when the cawing of crows signals the end of winter.

March’s Moon is also referred to as the Crust Moon. This is because snow cover melts by day and freezes at night, forming a crust.

Another variation is the Sap Moon, marking the time to tap maple trees.

To early settlers, this Moon was also known as the Lenten Moon, and was considered to be the last full Moon of winter.

Track each month’s moon phase, including each full moon appearance with our Moon Phase Calendar.

Get the Moon Phase calendar for the entire year when you join The Farmhouse, our growing eCommunity.

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Grace Grade 3

Amazing words descriptive too

Daniel James Lessley

Worm casts and robins?

Cora McPhee

Enjoyed my first news letter would like to know if this moon is also for worming children or adults if not is it the new moon would like to know.

Susan Higgins

Hi Cora McPhee, there is no relationship with this full Moon to deworming. It’s just the name of the Moon given by Native Americans due to springtime. We don’t offer a “best day” task for this.


Go to the Best Days section of the Farmers Almanac and you can find the Best Days to plant seeds. You can also find the section you live in and the best days for planting in your area as well.

farmer john

If you want to know about the moon stay up late and go outside.

Ellen Campbell

I love the little obscure facts that you publish in this Farmers Almanac newsletter, such as the names of moons and other such interesting bits of knowledge.

Jodine Glover

I want to start planting flower seeds and plants. When would be the best time to start.


Please consider turning Down the Music Volume. It Over Powers the Narration, which is the Reason for the Video.

Laura Knox

The full worm moon is the indication to start planting seeds indoors 6-8 weeks before last frost should be right now, but the sap isn’t running yet because of the cold winter, does this mean that sowing seeds around now (March 17) should be postponed a couple of weeks to coincide with the sap? Is the sap a good indication?

Jaime McLeod

That really depends on where you live, Laura Knox. Talk to someone at your local greenhouse or agricultural extension office.

Dennis Fields

Planting on moon cycles

Maryanne Johnson

Information on planting during a full worm moon.

Estie Buzard

I want to plant vegetable seeds and plant. I understand things grown under the ground, i.e. carrots, beets, should be planted during the dark of the moon. Things that grow above the ground. i.e. tomatoes, corn, etc. should be planted in the light of the moon. How can I find out when these times are or how they are identified on this website.

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