Oyster Shell Flour

Sale price$18.99

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Size: 16 OZ

Oyster Shell Flour

Oyster Shell Flour is a game-changer for vermicomposting enthusiasts and organic gardeners. With its rich calcium content, Oyster Shell Flour promotes overall worm health, enhances vitality, and keeps your composting system balanced. Calcium plays a vital role in strengthening worm cocoons, supporting reproduction, and ensuring that your worms remain active and productive. This makes it an essential addition for anyone serious about vermiculture.

Beyond calcium benefits, the gritty texture of oyster shell powder helps with worm digestion. Worms don’t have teeth—they rely on grit inside their gizzards to break down food. Adding this flour or oyster shell powder ensures that your worms process organic scraps efficiently, leading to faster composting and higher-quality worm castings. The end result? Nutrient-rich vermicompost that transforms your soil and helps plants thrive like never before.

Why Meme's Worms?

When you choose to buy from Meme's Worms, you're fuelling dreams, supporting education, and helping us leave a legacy for the next generation.


How much should I use?

You should use 1 tablepoon per 2lb of worms.

How often should I add Oyster Shell Flour to my worm bin?

A light sprinkling once every 1–2 weeks is sufficient to keep worms healthy and maintain balance in the bin.

Why Use Oyster Shell Flour in Worm Composting?

  1. Calcium Boost for Worms – Worms need calcium to produce strong, viable cocoons. Without it, their reproduction may slow down. Regular use of Oyster Shell Flour ensures your worm population continues to grow and stay healthy.
  2. Better Digestion – The gritty nature of oyster shell powder helps worms grind food inside their gizzards. This means scraps break down faster and composting happens more efficiently.
  3. Improved Vermicompost Quality – The calcium and trace minerals enrich the castings, producing compost that’s superior for plant health and soil structure.
  4. pH BalanceOyster Shell Flour helps neutralize acidic conditions inside the worm bin, preventing stress to worms and keeping the environment balanced.
  5. Eco-Friendly and Natural – Made from finely ground oyster shells, this supplement is 100% natural and sustainable, making it the perfect choice for eco-conscious composters.

How to Use Oyster Shell Powder in Worm Bins

Using oyster shell powder is simple and highly effective. Here’s how:

  • Sprinkle a handful of Oyster Shell Flour over the top layer of your worm bin once every 1–2 weeks.
  • Gently mix it into the bedding so it evenly distributes throughout the compost.
  • Avoid overusing—just a light dusting is enough to provide your worms with grit and minerals.
  • For larger bins or commercial worm farms, adjust the amount based on the population size.

By consistently adding this natural supplement, you ensure your worms digest food effectively while improving the quality of the final worm castings.

Why Gardeners Love Oyster Shell Powder

Gardeners who use vermicompost enriched with oyster shell powder often see remarkable improvements in plant growth. The calcium-rich worm castings enhance soil fertility, improve root development, and encourage healthier, more resilient plants. From vegetables and flowers to fruit trees and houseplants, the results are visible within weeks.

Moreover, when you buy oyster shell flour, you’re not just supporting worm health—you’re also investing in long-term soil enrichment. Calcium improves soil structure, reduces compaction, and helps balance soil pH, all of which make it easier for plants to absorb essential nutrients.

Sustainable and Eco-Friendly Choice

At Meme’s Worms, we focus on products that not only improve worm health but also align with sustainable living. Our Oyster Shell Flour is sourced from natural oyster shells and finely milled into oyster shell powder that’s easy to use. When you choose to buy oyster shell flour, you’re making a responsible choice that benefits your worms, your garden, and the environment.

Frequently Asked Questions

Customer Reviews

Based on 9 reviews
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R
Ralph

I find this to be very good. I will get again.

G
Gary

Very good customer service

G
Gary

Very good customer service

G
Gary P.

Excellent customer service! Meme answered the phone and answered all my questions regarding ordering. The first shipment got lost in the mail, but Meme made it right. The next shipment made it all the way to Wisconsin safe and sound.

R
Reaames V.

So convenient!

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