Product Description

All-Natural Calcium — Strong Eggshells for Hens, Healthier Garden Soil

Old Cobblers Farm Crushed Oyster Shell is an all-natural, calcium-rich product with two jobs: supporting strong eggshells in laying hens and adding calcium to your garden soil. It is simply crushed oyster shell — a natural source of calcium carbonate — making it a clean, single-ingredient supplement and amendment for poultry keepers and gardeners alike.

For laying hens, calcium is the key building block of a strong, durable eggshell. The best way to provide it is free-choice: offer the oyster shell in a separate dish alongside the flock’s normal feed, so each laying hen takes exactly what she needs. In the garden, finely crushed oyster shell adds calcium and, like other liming materials, can gradually reduce soil acidity and support soil structure.

It is a dual-purpose, low-waste choice — one natural product that supports your flock and your beds. Choose the bag size that fits your coop and garden, from a small flock to a larger operation.

Where to use it: as a free-choice calcium supplement for laying hens, and (finely crushed) as a calcium and liming amendment in garden beds and soil.

Key Benefits

• Supports Strong Eggshells: Calcium is the key building block of durable eggshells in laying hens.

• All-Natural Calcium: 100% crushed oyster shell — a natural calcium-carbonate source, single ingredient.

• Free-Choice Feeding: Offer in a separate dish so each laying hen takes what she needs.

• Adds Garden Calcium: Finely crushed, it adds calcium to garden soil.

• Reduces Soil Acidity: Like other liming materials, it can gradually reduce acidity and support soil structure.

• Dual-Purpose, Low-Waste: One natural product that supports both your flock and your beds.

• Sized for Any Operation: From small coops and gardens to larger flocks and plots.

Best Uses

• Free-choice calcium for laying hens

• Backyard flocks and homestead poultry

• Garden beds needing calcium

• Acidic soils that benefit from liming (finely crushed)

• Soil-structure support in garden beds

• Poultry keepers and gardeners wanting a dual-purpose product

Important Notes / Safety

• Offer Free-Choice to Hens: Provide oyster shell in a separate dish so laying hens self-regulate — this is safer than mixing a fixed amount into the whole flock’s feed.

• Mainly for Laying Hens: Chicks and non-laying birds (including roosters) do not need added calcium, and too much can harm them — keep added calcium for the layers.

• Always Provide Fresh Water: Offer clean, fresh water alongside feed and supplements at all times.

• Crush Finely for the Garden: The finer the shell, the faster it breaks down and the better the soil and acidity-reducing benefit.

• Go by a Soil Test: Like any liming material, base pH-related use on a soil test; it works gradually over time.

• Storage: Store in a cool, dry place. Keep sealed to maintain quality.

Why Choose Old Cobblers Farm™?

Old Cobblers Farm keeps it clean and simple: one natural, calcium-rich product that supports strong eggshells for your hens and adds calcium to your garden soil. Single-ingredient, easy to use, and sized for any flock or plot.

Application Instructions

-Laying hens: offer free-choice in a separate dish alongside the flock’s normal feed and fresh water
-Garden (calcium/lime): crush finely and work into beds/soil as a calcium and liming amendment, based on a soil test
-Alternative (confirm): the supplied copy suggests mixing ~100 g into feed — free-choice is recommended instead; confirm before publishing
Step by step
1. For hens, offer oyster shell free-choice in a separate dish so laying hens take what they need.
2. Keep it available alongside their normal balanced feed and fresh water.
3. Keep added calcium for laying hens — don’t supplement chicks or non-laying birds.
4. For the garden, crush the shells finely and work into beds or soil.
5. Add as a calcium/liming amendment based on a soil test.
6. Remember it reduces acidity gradually — like any lime, it works over time.
What not to do
Do not feed added calcium to chicks or non-laying birds (roosters) in quantity — they don’t need it and excess can harm them — and do not rely on coarse shell for a fast pH change in the garden (crush it fine and go by a soil test).

Ingredients

100% Crushed Oyster Shell — A natural source of calcium carbonate — the single ingredient, with nothing added.

Calcium (Ca) — The key nutrient — supports eggshell formation in laying hens and adds calcium to garden soil.

Calcium Carbonate — Acts as a liming material in the garden, gradually reducing soil acidity.

Product Specifications

-Product: crushed oyster shell (calcium supplement + soil amendment)
-Ingredient: 100% oyster shell (natural calcium carbonate)
-For hens: free-choice calcium for laying hens (strong eggshells)
-For garden: calcium / liming amendment (reduces acidity)
-Form: crushed / granular
-Best for: laying hens; calcium-needing or acidic garden soils
-Feeding method: offer free-choice in a separate dish