Category: Soil amendments

According to the National Institutes of Health, fish bones are a rich and natural source of calcium and phosphorus, confirming that yes, fishbone meal does have calcium. This slow-release fertilizer is a valuable organic byproduct, making it an excellent soil amendment for gardeners looking to improve plant and soil health.

Studies show that many soils become acidic over time, requiring amendments to maintain proper nutrient balance. But is dolomite lime a good source of calcium for correcting this issue? The answer depends heavily on your soil's specific needs and existing mineral levels, particularly the balance of calcium and magnesium.

A 2021 study revealed that interest in organic soil amendments like calcified seaweed has increased by nearly 30% among home gardeners. This natural, coral-like soil conditioner works to balance pH, improve structure, and supply vital trace elements for better plant health.

According to product specifications, the organic soil amendment Harvest Supreme is composed of a rich blend of premium, natural ingredients. The blend is specifically formulated to improve soil structure and deliver essential nutrients to plants, particularly vegetables and flowers.

According to agricultural extensions, wood ash contains a significant amount of calcium, with some sources reporting content as high as 25% or more. The quick answer is yes, ash is rich in calcium, but its benefits are highly dependent on the type of ash and how it is used.

Gaia Green Organics has several products that contain silica, most notably their Diatomaceous Earth and Glacial Rock Dust. This essential mineral is known to strengthen plant cell walls, leading to increased resistance to environmental stresses like drought and pests.

While it may look like a nutritious growing medium, coco fiber is largely inert and contains very few nutrients on its own. It acts primarily as a substrate to provide plants with support, excellent aeration, and moisture retention, but gardeners must provide all necessary nutrition separately.

According to research from the University of Wisconsin-Extension, calcium is the most common nutrient found in wood ash, comprising 20% or more of its content. Beyond its value as a liming agent, understanding what three minerals does ash provide is key for organic gardeners looking to boost soil fertility and improve plant health naturally.

Most bone meal fertilizers have an NPK ratio with zero potassium, making it a poor choice for gardens needing this vital nutrient. This common organic amendment is actually prized for its high phosphorus and calcium content, which support root growth and cellular health, but offers no significant potassium benefit.