Top 9 Chicken Oyster Shell Calcium – Garden Fertilizers

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1. Homestead Harvest


Homestead Harvest Coastal Oyster Shell Calcium Supplement – for Chickens and Ducks 50 lb

Homestead Harvest #ad - Made with oyster shells and crushed calcium carbonate. Builds strong eggshells. 50lbs – bulk pricing, Long shelf life. Perfect for free choice feeding. A balanced source of calcium.
BrandHomestead Harvest #ad
ManufacturerCoastal #ad
Height5 Inches
Length18 Inches
Weight50 Pounds
Width12 Inches

2. Bearded Hen


Triple Calcium w/Gizzard Grit, Egg Laying Hen Supplement, Limestone, Chicken 18 Pounds, Wild Turkey, Duck, Bearded Hen, All Natural Crushed Oyster Shell, Coral Calcium, Game Bird, Granite

Bearded Hen #ad - Crushed oyster shells, Granular Limestone, coral Calcium, & Grit Crushed Granite. Promotes healthy flocks, Digestive Health, Egg Shell Improvement, Strong Bones. Made in the usa! most complete Calcium & Grit Supplement Available. Developed for adult fowl & Poultry Not designed for small birds, quail, parakeets, etc. All natural, non-medicated, no antibiotics, no animal proteins or animal fats.
BrandBearded Hen #ad
ManufacturerM.C.D. #ad

3. Manna Pro


Adult, Manna Pro, 5 lb 1000212 Poultry Grit with Probiotics

Manna Pro #ad - For all classes of poultry. Designed to be fed with coarse grains. Insoluble crushed granite for all classes of poultry. Now includes probiotics to help aid proper digestion.
BrandManna Pro #ad
ManufacturerManna Pro- Pets #ad
Height11.5 Inches
Length4 Inches
Weight5 Pounds
Width8.3 Inches
Part Number08-0691-0236

4. Down To Earth All Natural Fertilizers


Down to Earth Organic White Oyster Shell OMRI, 5 lb

Down To Earth All Natural Fertilizers #ad - Ancient oyster shells are carefully harvested and then ground into small, medium and coarse particles, providing a sustained release of this valuable nutrient.

Down to earth oyster shell is a five pound box of all natural fertilizer and is listed by the Organic Materials Review Institute OMRI for use in organic production. With 35% calcium, outdoor containers, vegetable gardens, Oyster Shell is great for use on lawns, trees, flower beds, shrubs and row crops/acreage. Calcium is very important to the biological processes of growing plants and aids in improving structure of soils and building optimum tilth. All-natural and high-quality source of the essential plant nutrient calcium, helping prevent calcium deficiencies that can dimish plant development.
BrandDown To Earth All Natural Fertilizers #ad
ManufacturerDown To Earth All Natural Fertilizers #ad
Height11 Inches
Length4 Inches
Width8 Inches
Part Number07884

5. Old Cobblers Farm


Old Cobblers Farm Premium Oyster Shells for Chicken 15lb

Old Cobblers Farm #ad - Oyster shell provides a long-lasting, improve fertilizer uptake, steady release of nutrients to help regulate pH levels, promote healthy cellular structure and enhance soil tilth. Great source of calcium for chicken, ducks, and quail. Promotes strong eggshells for your birds.
BrandOld Cobblers Farm #ad
ManufacturerOld Cobblers Farm #ad

6. Four Winds Trading


Natural Crushed Oyster Shell with Calcium 8 lb

Four Winds Trading #ad - Wonderful amenity to any garden. Slowly releases calcium, a much needed nutrient. Helps neutralize soil acidity. All natural crushed oyster shell.
BrandFour Winds Trading #ad
ManufacturerFour Winds Trading #ad

7. Premier 1 Supplies


6 Lb., Premier Poultry Grit & Oyster Shell Feeder

Premier 1 Supplies #ad - Removable lid allows easy filling and helps protect feed from outdoor elements. Capacity is 6 lbs. Grit aids digestion. Oyster shell enables stronger egg shells. Made of heavy duty plastic. Provides easy access to grit and oyster shell for a wide range of poultry, game birds and waterfowl.
BrandPremier 1 Supplies #ad
ManufacturerPremier 1 Supplies #ad
Weight1.1 Pounds
Part Number540045

8. Prairie's Choice


Layer Formula, 25lbs, Prairie's Choice Non-GMO Backyard Chicken Feed

Prairie's Choice #ad - Eligible for Prime Shipping. Total nutrition for healthy, productive layers. Egg layer formula all natural backyard chicken feed. Grown and packaged in the USA.
BrandPrairie's Choice #ad
ManufacturerPrairie's Choice #ad
Height28 Inches
Length3 Inches
Weight25 Pounds
Width13 Inches
Part NumberL-25



BSF Larvae Treats for Hens, Non-GMO, Birds, Ducks, FLYGRUBS Superior to Dried Mealworms for Chickens 5 lbs, Chicken Feed & Molting Supplement, 85X More Calcium Than Meal Worms

FLYGRUBS #ad - Sturdy box with resealable bag: customers enjoy full size grubs instead of broken worms. Chickens love these: to encourage natural feeding behavior simply scatter on the ground.

More essential nutrients than mealworms: 85x more calcium than meal worms, phosphorus, fiber, 36-42% protein, 25-30% healthy fat, lysine & dietary fat. Much easier to handle than live mealworms for chickens & superior to freeze dried worms. Healthier feather production: flygrubs are affordable black soldier fly larvae treats for birds that promote stronger eggshells and help hens regain normal energy levels and egg production. Your flock will come running for organic chicken feed for laying hens. Your girls will go crazy for Flygrubs. No questions asked! Ducks, birds, bluebirds, turtles & bearded dragons also love Flygrubs.
ManufacturerFLYGRUBS #ad
Height7.5 Inches
Length12.5 Inches
Weight5 Pounds
Width11 Inches