Down to Earth Oyster Shell – Organic Calcium Fertilizer for Garden & Indoor Plants

Down to Earth Oyster Shell is a natural, organic source of calcium (Ca 35%), ideal for improving soil structure and preventing common calcium deficiencies in a wide range of plants. Carefully ground from ancient oyster shells into varied particle sizes, this slow-release amendment supports steady nutrient availability and healthy plant development.

Perfect for vegetables, flowering plants, herbs, potted plants, and trees, Oyster Shell is listed by OMRI for use in organic production and is commonly used in both traditional and container gardening.

🪴 Best For:

• Strengthening plant cell walls with natural calcium

• Preventing blossom end rot in tomatoes and peppers

• Supporting healthy root development and overall plant vigor

• Improving soil tilth and structure

📋 Guaranteed Analysis:

• Calcium (Ca): 35.0%

• Derived From: Ground Oyster Shell

✅ How to Use:

Vegetable Gardens & Flower Beds:

• New garden prep: Mix 2.5–5 lbs per 100 sq ft into top 3” of soil

• Transplants: Add 1–2 tsp per hole and water in well

Outdoor Containers:

• New plantings: Mix 1–2 tbsp per gallon of soil

• Established plants: Mix 1–2 tbsp per gallon into soil surface every other month

Lawns:

• Apply 2.5–5 lbs per 100 sq ft in spring or fall; water in after application

• Best results when used after aeration

Trees & Shrubs:

• Spread 1 lb per 1" of trunk diameter around base to drip line; mix into soil and water in

• For new trees, mix 1–2 cups with backfill soil during transplanting

Large-Scale Use (Row Crops/Acreage):

• Apply 500–2,000 lbs per acre, based on crop and soil analysis

📦 Available Sizes:

• 100g Repacked

• 200g Repacked

🌿 Suitable for indoor and outdoor gardening
🔍 Organic and slow-release calcium amendment
📌 Trusted by gardeners to prevent nutrient deficiencies in vegetables and flowering plants