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National Diatomaceous Earth Day

Get ready to celebrate National Diatomaceous Earth Day - a day dedicated to the amazing benefits and uses of this natural mineral.

Monday

August 2026

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATEAugust 31

OBSERVED INUnited States

CATEGORYBusiness

SUBCATEGORYIndustries

INTRO

Introduction

PHOTO

Get ready to learn about the wonders of diatomaceous earth on National Diatomaceous Earth Day on August 31! This day celebrates a naturally occurring sedimentary rock that is made up of fossilized remains of tiny aquatic organisms called diatoms. While it may sound like something out of a science textbook, diatomaceous earth has many practical uses in everyday life, from cleaning and pest control to skincare and agriculture. So let's take a closer look at this fascinating substance and celebrate its unique properties on this special day!

TIMELINE

National Diatomaceous Earth Day Timeline

Discovery of Diatomaceous Earth

Diatomaceous Earth (DE) was discovered by a German peasant named Peter Kasten who mistook it to be limestone.

Commercial Use Begins

DE started to be mined and used commercially for its natural filtering properties and abrasiveness.

First U.S. DE Mine

The first diatomaceous earth mine in the U.S. was established in Livermore, California.

Pest Control Uses

Home and garden uses of DE expanded, especially as a natural pest control solution.

Health Supplement Uses

DE started to be used as a health supplement due to its high silica content.

National Diatomaceous Earth Day

National Diatomaceous Earth Day was first celebrated on August 31, 2015, to acknowledge the wide array of uses of this unique substance.

GET INVOLVED

How to Celebrate National Diatomaceous Earth Day

Make your own diatomaceous earth products

Get creative and make your own diatomaceous earth products, such as soaps, deodorants, or toothpaste. Not only will you have fun making them, but you'll also have natural and eco-friendly products to use.

Go on a nature hike

Celebrate National Diatomaceous Earth Day by going on a nature hike and learning more about the uses and benefits of diatomaceous earth in the environment. You may even find some samples to take home!

ATTEND

Attend a diatomaceous earth workshop

Check if there are any workshops or events in your area that focus on diatomaceous earth. These can be great opportunities to learn more about this amazing substance and how it can benefit your life.

THROW

Throw a diatomaceous earth party

Gather your friends and family for a diatomaceous earth-themed party. You can serve food and drinks made with diatomaceous earth, play games, and have a great time celebrating this unique holiday together.

SPREAD

Spread awareness on social media

Use your social media platforms to spread awareness about National Diatomaceous Earth Day and the benefits of using diatomaceous earth. You can share fun facts, DIY recipes, and encourage others to celebrate this day with you.

WHY THIS DAY MATTERS

Why We Love National Diatomaceous Earth Day

It's great for gardeners

Gardeners love DE because it helps control pests without harming beneficial insects. It also contains minerals like calcium, magnesium, iron, and zinc that are beneficial for plant growth. Plus, it doesn't harm the soil or surrounding plants like chemical pesticides do.

It's a natural and eco-friendly product

Diatomaceous Earth (DE) is made from fossilized remains of diatoms and is safe for humans, animals and the environment. It can be used as a natural pest control, to purify water, and as a gentle exfoliant for skin care.

It has various household uses

DE can also be used around the house for various purposes such as deodorizing carpets, absorbing spills, and even as a natural de-wormer for pets. Its versatility makes it an essential product for many households!

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