๐Ÿš Oyster Shell Flour โ€“ 1 LB
Premium Calcium & pH Buffer for Worm Bins, Mushrooms & Gardens
SKU: 90387417165

๐Ÿš Oyster Shell Flour โ€“ 1 LB Premium Calcium & pH Buffer for Worm Bins, Mushrooms & Gardens

Sale price$22.49 Regular price$24.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours ยท Estimated delivery Jul 8 - Jul 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

๐Ÿš Oyster Shell Flour โ€“ 1 LB Premium Calcium & pH Buffer for Worm Bins, Mushrooms & GardensLocal Pick Up or Delivery Give your soil, mushrooms, and worm bins the boost they deserve with our Lumbri Worms & Garden Premium Oyster Shell Flour. This finely milled calcium supplement is a must have for growers who actually care about consistency and balance not chaos in the bin. Made from pure, natural oyster shells, this flour acts as a long lasting pH buffer, helping maintain stable conditions in worm bins, improving substrate structure for

Local Pick Up or Deliveryย 

Give your soil, mushrooms, and worm bins the boost they deserve with our Lumbri Worms & Garden Premium Oyster Shell Flour. This finely-milled calcium supplement is a must-have for growers who actually care about consistency and balance โ€” not chaos in the bin.

ย 

Made from pure, natural oyster shells, this flour acts as a long-lasting pH buffer, helping maintain stable conditions in worm bins, improving substrate structure for mushrooms, and reinforcing soil health in gardens and raised beds.

ย 

This isnโ€™t gritty crushed shellโ€ฆ this is true flour โ€” ultra-fine, fast-reacting, and perfect for growers who want predictable results.

ย 

Why Growers Love It

ย 

๐Ÿ”ง Buffers pH naturally โ€“ Keeps worm bins from going acidic and prevents โ€œsour bin syndrome.โ€

ย 

๐Ÿชฑ Supports healthy digestion in worms โ€“ Works as a micro-grit to help worms break down food faster & produce richer castings.

ย 

๐Ÿ„ Perfect for mushroom substrate โ€“ Stabilizes pH and improves mycelium colonization.

ย 

๐ŸŒฑ Strengthens soil structure โ€“ Adds bio-available calcium for tomatoes, peppers, leafy greens & heavy feeders.

ย 

๐ŸŒฟ Long-lasting and slow-release โ€“ Doesnโ€™t wash out quickly like other amendยญments.

ย 

How to Use

For Worm Bins:

Sprinkle 1โ€“2 teaspoons per feeding or 1โ€“2 tablespoons weekly for larger systems.

For Mushroom Substrate:

Add 1โ€“2% of total dry weight (about 1โ€“2 tablespoons per 5โ€“10 lbs of substrate).

For Gardens & Pots:

Mix 1โ€“2 tablespoons per gallon of soil, or ยฝโ€“1 cup per cubic foot of mix.

ย 

Ingredients

100% pure oyster shell flour

No fillers. No additives. Just clean, consistent calcium.

ย 

Weight

1 lb (resealable matte black stand-up pouch)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90387417165

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 โ˜…โ˜…โ˜…โ˜…โ˜…
Based on 1244 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
V
Verified Purchase
VICKI CARROLL
Alexandria, US
โ˜…โ˜…โ˜…โ˜…โ˜… 4
Nice Jewelry Box
Color: Jelly Pink, Material Type: Paper, PU, Color: Jelly Pink, Material Type: Paper, PU
Really nice jewelry box just smaller than expected. My fault for not checking the dimensions first. Itโ€™s a great value for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
C
Verified Purchase
Coco
Natrona Heights, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
Nice little jewelry box
Color: Cloud White, Material Type: Paper, PU
Just what I wanted in size and available compartments. The only thing I am hesitant about is the paper outside. Mine is white and may get dirty quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
J
Verified Purchase
James
Natrona Heights, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
A Lovely and Useful Gift
Color: Cloud White, Material Type: Paper, PU
I bought this SONGMICS jewelry organizer box as a gift and it was a great choice. The design is beautiful and it keeps jewelry well organized. Itโ€™s compact and perfect for travel or everyday use. The person I gave it to loved it and uses it all the time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
J
Verified Purchase
Jeimy Aguilar
Louisville, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
Small and cute!
Color: Cloud White, Material Type: Paper, PU
Its perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
A
Verified Purchase
alessa
Grantham, US
โ˜…โ˜…โ˜…โ˜…โ˜… 5
Great value, great product!
I use this as a home jewelry box - I don't wear a lot of jewelry, so it fits my needs perfectly. Its pretty lightweight and would be good for travels as well. The outside is leather-like and seems to be waterproof so far. I use the first layer for jewelery and second layer to store my hairclips and pins. I've had it for a few months and it seems to be great quality and durable! Definitely a good value as well because I've seen similar jewelry boxes sold at popular retail stores for over $30.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026

recommand products