The Month of May 2021: Holidays, Fun Facts, Folklore

Everything You Should Know about May!

April 13, 2021
Hummingbird at Impatiens

Celebrate the gorgeous month of May! The Sun is warming, the birds are chirping, the flowers are blooming, and the garden is growing. Find out what fun days May has to offer—from holidays to history to gardening advice.

The Month of May

“May” is likely named for the Roman goddess Maia, who oversaw the growth of plants. Alternatively, the name might have come from the Latin maiores, “elders,” who were celebrated now. Learn more about the origins of the months’ names.

May Calendar

  • May 1 is May Day. Mark the return of spring by bringing in branches of forsythia, lilacs, or other flowering shrubs from your region.
  • May 1 is Lei Day in Hawaii. Leis are garlands or wreaths that are often made with native Hawaiian flowers and leaves. Nowadays, they are given as a symbol of greeting, farewell, affection, celebration, or honor, in the spirit of aloha. Lei Day originated in 1927, when poet Don Blanding proposed a holiday to recognize the lei’s role in Hawaiian culture. Writer Grace Tower Warren suggested May 1 for the date because it coincided with May Day, a celebration also linked to flowers. She coined the phrase, “May Day is Lei Day.” The first Lei Day observance occurred on May 1, 1928. The following year, it was made an official holiday in the territory. (Hawaii did not become a state until 1959.)
    • Today, Lei Day celebrations may include music, games, exhibits, and lei-making demonstrations and contests. 
  • May 5 is Cinco de Mayo (“The Fifth of May”). This day celebrates the victory of the Mexican army over the French army at The Battle of Puebla in 1862.
  • May 9 is Mother’s Day—don’t forget! Do you have something planned to show appreciation for your mother? Learn about the history of Mother’s Day. 
  • May 16 is Armed Forces Day, which honors those who serve in all branches of the United States military. 
  • May 22 is National Maritime Day. Created in commemoration of the first transoceanic voyage via steamboat (completed by the U.S.S. Savannah in 1819), this holiday recognizes the efforts of the U.S. merchant marine during both war and peace. 
  • May 24 is Victoria Day in Canada. This holiday celebrates the birthday of Queen Victoria, who was born on May 24, 1819. The holiday is observed on the penultimate Monday in May.
  • May 31 is Memorial Day—a poignant reminder of the tenacity of life. It’s tradition to raise the flag on this day; know how to fly your American flag properly.

“Just for Fun” Days

May is Get Caught Reading Month and National Good Car-Keeping Month

Here are some more fun things to celebrate this May:

  • May 1: School Principals’ Day
  • May 2: World Tuna Day
  • May 4–11: Root Canal Awareness Week
  • May 8: No Socks Day
  • May 14: Dance Like a Chicken Day
  • May 28: Slugs Return from Capistrano Day

Full Flower Moon
May’s full Moon traditionally goes by the name “Flower Moon.”

May Astronomy

The Full Flower Moon

May’s full Moon, the Flower Moon, occurs on Wednesday, May 26. It reaches peak illumination at 7:14 A.M. (EDT) that morning, so for the best view of this full Moon, step outside on the night of Tuesday the 25th and look for that big, bright, shining lunar disk! Two more interesting thing’s about this month’s full Moon: it will be a supermoon and will coincide with a total lunar eclipse (visible in some parts of North America)! Learn more about May’s full Moon here.

May’s Moon Phases

Last Quarter: May 3, 3:50 p.m. EDT
New Moon: May 11, 3:00 p.m. EDT
First Quarter: May 19, 3:13 p.m. EDT
Full Moon: May 26, 7:14 a.m. EDT

May Weather

A warm January, a cold May.

May acts as the bridge between spring and summer, hinting at warmer weather for those still stuck in spring’s grasp, while heating things up for those already well on their way.

See our 5-day forecast to plan for now and our extended 60-day forecast to plan for later!

Asparagus Frittata. Photo by zi3000/Shutterstock
Asparagus frittata. Photo by zi3000/Shutterstock.

Recipes for the Season

‘Tis the season of fresh, spring ingredients! Check out our list of Spring Recipes to get inspired.

Try some of these recipes that feature the first crops of the season:

Everyday Advice

Butterfly on flower

Gardening Tips

Oh! fragrant is the breath of May
In tranquil garden closes,
And soft yet regal is her sway
Among the springtide roses.
—William Hamilton Hayne, American poet (1856–1929)

May Folklore and Fun

A dry May and a leaking June
Make the farmer whistle a merry tune.

A snowstorm in May
Is worth a wagonload of hay.

Among the changing months, May stands confessed
The sweetest, and in fairest colors dressed!

–James Thomson, Scottish poet (1700–48)

    May Zodiac Signs

    Taurus: April 21 to May 20

    Gemini: May 21 to June 20

    May Birth Symbols

    May’s birth flowers are the Hawthorn and the Lily-of-the-Valley.

    The hawthorn means hope, while the lily-of-the-valley symbolizes sweetness or the return of happiness. Learn more about May’s birth flowers.

    May’s birthstone is the emerald. See birthstone meanings.

    A few fun facts about emeralds:

    • The emerald is a green type of beryl. Its color ranges from light to rich green; the more saturated hues are more valuable, especially if pure- or blue-green. 
    • Natural emeralds are flawed, with fractures or other materials mixed in, called inclusions, which may appear as needles, columns, or cubes of minerals or bubbles of gas or liquid. Sometimes oil or resin is added to fill fractures and improve appearance.
    • Some of the best emeralds come from South American mines, although perhaps the oldest known came from Egypt. The emerald was a favorite gem of Cleopatra.
    • The emerald symbolizes rebirth and fertility and was thought to grant foresight, cure various diseases, soothe nerves, improve memory, and ensure loyalty.

    This Month in History

    May 23: What’s Your Name?

    On this day in 1707, Swedish botanist and naturalist Carl Linnaeus was born. One of his major achievements was the formal introduction of a system of classifying and naming organisms according to genus and species, called binomial nomenclature. The method uses Latin words (a language commonly used by scholars in his day). For example, humans are classified as Homo sapiens. Homo, meaning “man,” is the genus and sapiens, meaning “wise,” is the species. Several species may exist within one genus, but each species only has one scientific name. Scientists today use a modified version of Linnaeus’s system. Because the same naming convention is used throughout the world, it eliminates much confusion when discussing organisms. 

    Did You Know?
    Carl Linnaeus originated the use of 0 (the symbol for Mars) to mean male and 1 (the symbol for Venus) to mean female.

    May 26: Terrifying Twisters

    On this day in 1917, tornadoes struck central Illinois, killing 101 people. Originally thought to be just one tornado that wreaked havoc along a 293-mile-long path, the outbreak was later determined to be four to eight tornadoes. One of them lasted 4 hours and followed a track 155 miles long (including the distance traveled while in the air). Mattoon and Charleston were especially hard hit by an F4 tornado (original Fujita scale). In Mattoon, almost 500 houses were destroyed.

    Mattoon twister, 1917

    According to newspaper reports:

    • straw was driven ½ inch deep into a tree
    • a flagpole with flag was blown four blocks and planted upright in the ground
    • books and other items were carried 50 to 70 miles away

    Calendar Question

    According to astronomers, what is a Julian day?

    Answer: The term “Julian day” can be confusing because it has several meanings, including being a date on the Julian calendar. In astronomy, however, the Julian day (or Julian day number) is the number of days that have passed since the start of a Julian period. The Julian period is a year-numbering system developed by 16th-century French astronomer Joseph Justus Scaliger. He determined that the current Julian period began on January 1, 4713 B.C. of the Julian calendar; every 7,980 years, the count of years restarts.

    For dating and comparing the timing of astronomical events and observations, John Herschel and other astronomers created a day-numbering system based on Scaliger’s Julian period. There are no months in a Julian day system; it simply counts the days, and fractions of days in decimals, since the period began. Julian day 0 occurred on January 1, 4713 B.C. The Julian day starts at noon Universal Time (Greenwich Mean Time) so that nighttime astronomical events occur on one Julian day. 

    A Julian date includes the fraction of a Julian day. For example, on May 1, 2016 (Gregorian calendar date), at midnight (the start of the day on a common calendar) the Julian day number was 2457509, and the Julian date was 2457509.5. On May 1, 2016, at noon, the Julian day number changed to 2457510 and the Julian date to 2457510.0.


    Reader Comments

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    I forgot to mention above,

    I forgot to mention above, that I container garden and I will be planting most of the herbs mentioned above today 5-19-15. I also have a Dwarf Myers Lemon & Cocktail Lime tree from a Nursery that had them planted together, they said they would be fine in the pot and grow fine together, and said they would grow to the size pot they are transplanted in. I have them in an 11" pot as that is what the nursery had them in to grow. I received them both in a 7" or 8" pot. Anyway I have been finding snail trails in the dirt and my little baby Meyers lemons and Limes have been turning yellow and falling off as well. Are the fruits turning yellow and falling off because of Snails or Slugs? And if so can I plant a rosemary herb in with them? I put the Rosemary herb in it's Biodegradable pot setting in the pot with the Myer Lemon & Lime and have seen no snail trails since, I know they do not like Rosemary it is a good snail and slug repellent,what do you think will the Rosemary choke out my Dwarf trees or grow to size with them in the pot?

    Is it a good idea to plant

    Is it a good idea to plant Fennel with Celosia in the same container, or will I have Hornworms and other pests eating my Celosia, I seen that Fennel repels Spider mites which are a problem or can be for Celosia. I am trying to keep my Celosia pest free as well would like to keep my Mint Plants,and other herbs pest free so far I have Chocolate mint, Peppermint, Orange Mint, Mojito mint, Spearmint. I also and would like to keep pest free,Pineapple sage, Thyme, Dill, Lavender, Rosemary and other herbs. Can you tell me what herbs are good to plant with others to keep them pest free as well as with the Celosia, to keep them all pest free and growing in harmony,Please....Thank you



    Help! My mint and basil are

    Help! My mint and basil are being eaten alive by something I cannot see or find or seem to be able to get rid of! Basil leaves are dropping to the ground ...whole. Mint leaves have holes chewed in them til they just a skeleton! I'm desperate!

    Since you mention both mint

    The Editors's picture

    Since you mention both mint and basil, it sounds as if you have a caterpillar. In the early evening, go outside and look for green caterpillars under the leaves or along the stems. Try a caterpillar insecticide with Bt (Dipel). See your local garden store. Spray in the evening and it should take care of them. Hope they make a comeback.

    does any one know how to dry

    does any one know how to dry sage for keeping or storge?

    Hi there, check out our sage

    The Editors's picture

    Hi there, check out our sage page for growing, care, and storage tips!

    Tie it in bundles and hang

    Tie it in bundles and hang upside down for a few days. Should be ready to use in about 3 days. Keep stems on for making smudge sticks, or strip leaves off and pack in mason jars for culinary use. Stays pungent for years in a good sealed jar.