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Book 24, Question 66 · Video

Why do mushrooms sometimes grow in a circle called a fairy ring?

Video · 1:54 · Crafty Clover explains, from A Million Whys Book 24

A fairy ring is a circle of mushrooms in a lawn or forest. It starts from one spot where a fungus grows underground from a single spore. The threads spread outward in every direction. The oldest threads in the middle die, so the living fungus is a growing ring, and mushrooms pop up along its edge.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do mushrooms sometimes grow in a circle called a fairy ring?

The Big Idea

Sometimes mushrooms pop up in a perfect circle. People call it a fairy ring. But it is really a fungus growing outward!

One Spot

Step one: One Spot. A fairy ring starts from one spot where a fungus grows underground from a single spore. Its threads spread outward in every direction.

Middle Fades

Step two: Middle Fades. The oldest threads in the middle die. So the living fungus becomes a growing ring.

Mushrooms Pop Up

Step three: Mushrooms Pop Up. Mushrooms pop up along its edge. Some rings grow bigger by about a foot a year. Never eat wild mushrooms.

A Closer Look

Let's take a closer look! It starts with one spore. Threads spread out. The middle fades into a ring. Mushrooms pop up on the edge.

Quick Facts

Quick facts! Old stories said fairies danced in these circles at night. The grass on a fairy ring can look darker green. Some rings grow very wide over many years. Never eat wild mushrooms, because some are poisonous.

Think Like a Scientist

Now, think like a scientist! After rain, look at a lawn or park with a grown-up. Do you spot a circle of mushrooms? Draw it, but do not touch or eat any. Wash your hands afterward if you touched the grass. How wide is the circle?

Outro

Mushrooms grow in a fairy ring because a fungus spreads outward from one spot, the old middle dies, and mushrooms pop up along the growing edge. Never eat wild mushrooms. Science is amazing! What will you discover next? Every question is a new adventure, so keep wondering and keep exploring with me! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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