High quality ag/lime soil conditioner which provides immediate and long term release of nutrients that control pH levels. Natural, organic source of calcium is used to correct Ca deficiencies and raise pH in acidic soils.

• Contains 96% calcium carbonate plus a natural balance of 10 other nutrients and micronutrients.

• Variable particle size provides both immediate and long-term fertilization.

• Use at 4-5 lb/20 row feet for flowers and vegetables or 1 lb/tree, 2-10 lb/100 sq ft or 500-4,000 lb/acre, depending on soil analysis and crop. Repeated applications may be needed to fully adjust pH and Ca levels.

• In acidic soils, add 1-3 lb/hole when planting trees.

• Also good for bocce ball courts!

Oyster Shell Flour: A Natural Mineral Supplement

Oyster Shell Flour, derived from the shells of marine mollusks, is a versatile and beneficial agricultural product that has gained popularity among farmers and gardeners alike. Rich in calcium and other essential minerals, this finely ground powder offers a wide range of benefits to improve soil health, boost plant growth, and enhance overall crop yield. In this comprehensive overview, we will explore the various aspects of Oyster Shell Flour, including its composition, benefits, application methods, and its contribution to sustainable agriculture.

Composition of Oyster Shell Flour

Oyster Shell Flour is primarily composed of calcium carbonate, making it a valuable source of this essential nutrient for plants. Calcium is crucial for plant growth and development, playing a pivotal role in cell division, cell wall structure, and the transport of other nutrients within the plant. Apart from calcium, Oyster Shell Flour also contains trace elements such as magnesium, phosphorus, and potassium, which further contribute to soil enrichment.

Benefits of Oyster Shell Flour

1. Improved Soil pH Balance: Oyster Shell Flour is a natural pH adjuster. It helps raise soil pH levels when they are too acidic, creating a more favorable environment for plant growth. This can be particularly beneficial in regions where soil tends to be overly acidic.

2. Enhanced Nutrient Uptake: Adequate calcium levels in the soil promote better nutrient uptake by plants. Oyster Shell Flour's calcium content helps prevent nutrient deficiencies and ensures that plants have access to the necessary elements for their growth.

3. Stronger Plant Structures: The presence of calcium in Oyster Shell Flour strengthens plant cell walls, making plants more resistant to diseases and pest infestations. This results in healthier and more robust plants.

4. Improved Root Development: Calcium is essential for root development, and Oyster Shell Flour fosters the growth of strong and extensive root systems. This enhanced root development allows plants to access water and nutrients more effectively, especially in drought-prone areas.

5. Long-Lasting Soil Amendment: Oyster Shell Flour provides a slow-release source of calcium, which means its benefits can last for several years. This makes it a cost-effective and sustainable soil amendment option.

Application Methods

Oyster Shell Flour can be applied to soil in various ways, depending on the specific needs of your garden or field. Here are some common application methods:

1. Broadcasting: Spread Oyster Shell Flour evenly across the surface of the soil, and then incorporate it into the soil using a rake or tiller. This method is suitable for large areas and can help improve overall soil pH.

2. Incorporation into Compost: Mix Oyster Shell Flour into your compost pile to ensure a steady release of calcium into your soil when you apply the compost.

3. Row Application: Apply Oyster Shell Flour in rows for specific crops or plants that require extra calcium or have known calcium deficiencies.

4. Top-Dressing: For established plants, lightly sprinkle Oyster Shell Flour around the base of the plants and water it in. This method can be used to address localized calcium deficiencies.

Using Oyster Shell Flour for Specific Needs

1. Adjusting Soil for Flowers and Vegetables: Using oyster shell flour is an effective method for adjusting garden soil, particularly for flowers and vegetables. This high-quality soil conditioner provides essential plant nutrient calcium, crucial for preventing calcium deficiencies and promoting healthy plant development. When preparing a transplant hole, incorporating carefully harvested oyster shells into the backfill soil enhances soil tilth, ensuring a steady release of valuable nutrients for new trees and established plants throughout the growing season. Regular applications of this all-natural product can improve the soil structure, supporting optimal fertilizer uptake and overall crop requirements.
2. Application for Trees and Larger Plants: Using oyster shell flour for trees and larger plants effectively addresses calcium deficiencies and supports plant development. This high-quality soil conditioner, derived from ancient oyster shells, provides the essential plant nutrient calcium while enhancing soil tilth and structure. When preparing a transplant hole, incorporating carefully harvested oyster shells into the backfill soil promotes steady nutrient release, ensuring that new trees and established plants thrive throughout the growing season, particularly when applied based on soil analysis for optimal results.
3. Benefits for Specialty Uses (e.g., bocce ball courts): Using oyster shell flour, particularly Down To Earth's oyster shell, offers significant benefits for specialty applications like bocce ball courts. Its coarse particles and irregular shapes provide a high-quality source for building optimum tilth, improving soil structure, and ensuring sustained release of valuable nutrients. When preparing transplant holes or maintaining flower beds and outdoor containers, incorporating oyster shell flour into amended soil enhances the growth of new trees and plants, while supporting effective drainage and nutrient uptake throughout the growing season.

Contributing to Sustainable Agriculture

Oyster Shell Flour aligns with sustainable agriculture practices in several ways:

1. Reduced Chemical Dependency: By naturally adjusting soil pH and providing essential nutrients, Oyster Shell Flour reduces the need for chemical fertilizers and pH-adjusting chemicals.

2. Long-Term Soil Health: Its slow-release properties mean less frequent applications, reducing the environmental impact associated with excessive fertilizer use.

3. Enhanced Plant Resilience: Stronger plants are less susceptible to diseases and pests, reducing the need for chemical pesticides.

Oyster Shell Flour is a valuable natural mineral supplement that can significantly benefit your garden or farm. Its calcium-rich composition, pH-adjusting properties, and long-lasting effects make it an essential tool for improving soil health, plant growth, and overall crop yield. By incorporating Oyster Shell Flour into your agricultural practices, you can contribute to sustainable and eco-friendly farming while reaping the rewards of healthier, more productive plants.

For any other soil needs please check our soil amendments collection.

For fertilizing and plant nutrition, our collection of fertilizers will meet your needs.

Why Buy Oyster Shell Flour From Us?

Our high-quality source of DTE oyster shell flour is approved by the Organic Materials Review Institute, making it perfect for enhancing amended soil in organic production. With coarse particles and irregular shapes, it provides valuable nutrients for building optimum tilth in flower beds and outdoor containers, ensuring sustained release for new gardens, plantings, and transplants. Use it to prepare transplant holes or maintain the drip line around new trees for improved structure and growth across every acre.

⚠ Warning: This product or its packaging has a CA Prop 65 Warning

Does not qualify for Flat Rate Shipping.

Shipping Weight: 51.0 lb

Dimensions: 22.0"L x 12.0"W x 6.0"H