Best Mineral Garden Fertilizers of 2025

Azomite Organic Trace Mineral Powder is a bulk fertilizer powder that helps to remineralize nutrient-depleted soils and improves root systems, yields, and plant health. With 67 essential minerals, this powder is great for blending into soil mixes, hydroponic systems, greenhouse potting soil, fertilizer, home gardens, and potted plants. Apply 1/2 lb per 100 square feet or 1/2 lb per 200 ft of linear row in a 6" wide band. This product is OMRI-Listed for use in organic production.

The Down to Earth Organic Azomite Granulated Trace Minerals 0-0-0.2, 5 lb is a natural mineral product mined in Utah, which can improve plant and root growth, crop yields, and soil quality. It is virtually dust-free and can be easily applied on fields or blended with other fertilizers as a trace mineral resource. It is listed by the Organic Materials Review Institute (OMRI) for use in organic production.

AZOMITE by PowerGrow is a 5-pound bag of certified organic trace minerals. This product is approved for organic use, ensuring that you can use it confidently in your garden. The micronized formula is ultrafine, making it easy to apply and mix into your soil. As an official partner of Azomite in the USA, PowerGrow guarantees quality and reliability. By incorporating AZOMITE into your gardening routine, you can enhance your plant yields and provide essential micronutrients, promoting healthier growth and vibrant plants.

New Country Organics Planters ll is designed to enhance your garden's health with over 30 natural trace minerals. These minerals support robust plant growth and foster beneficial microbial activity in the soil. You’ll find that this product helps convert organic matter into rich humus, making nutrients more accessible to your plants. Additionally, being OMRI Listed, you can trust its organic integrity. Mined in Colorado, it brings quality and convenience directly to your gardening needs, ensuring your plants thrive in a nutrient-rich environment.

Raw Supply Azomite 5lbs is an organic trace mineral powder that offers approximately 70 essential minerals for both you and your garden. This micronized azomite fertilizer, packed in a resealable heavy-duty bag, is a soil-friendly amendment that enhances plant immunity, strengthens root systems, and boosts crop yield. Approved by the Organic Materials Review Institute (OMRI), this product is 100% safe for plants, helping remineralize depleted soils. With key nutrients like calcium, magnesium, and soluble potash, Raw Supply Azomite 5lbs is an ideal choice to support plant vigor and overall health in garden vegetables and field crops.

Southside Plants Gypsum is a natural mineral calcium sulfate dihydrate powder used as a garden soil amendment fertilizer for lawns and plants. It is an all-natural mineral fertilizer that supplies essential nutrients calcium and sulfur to improve plant growth, maximize fertilizer performance and improve soil physical condition. It also benefits soil garden, promotes plant health, and is versatile for both indoor and outdoor gardening.

GS Plant Foods Ocean Magic Sea Minerals is an organic plant fertilizer that re-mineralizes the soil and improves plant growth. Made from clean sea water, this water-soluble spray solution contains all the minerals found in healthy animal blood. It can be used on all types of soil, plants, and crops, and is gentle enough for indoor plants. With easy application instructions, this product yields consistent and amazing results in your garden.

Down To Earth Metabasalt is a natural mineral product that enhances your garden soil. This unique greenstone is formed from basalt that has been transformed by heat and pressure over millions of years. Its distinctive green hue comes from a variety of minerals, making it not only visually appealing but also beneficial for plant growth. It is packed with essential nutrients like calcium, magnesium, and iron, which are vital for healthy plants. You can easily apply it directly to your soil or mix it with other organic fertilizers and composts, ensuring your garden thrives.

Sea-90 Mineral Fertilizer is designed to provide your plants with a broad spectrum of essential minerals and trace elements, helping them to thrive. Its micronized formula dissolves quickly in water, allowing for easy application as a foliar spray or through drip irrigation. This unprocessed fertilizer maintains the natural balance of sea minerals, promoting overall health and resilience in your plants. By incorporating this product into your regular feeding routine, you ensure that your plants receive the nutrients they need to grow strong and produce nutrient-rich food for you and your family.

This Garden Smart Azomite Organic Trace Mineral Powder Fertilizer is a natural and organic soil additive that contains 67+ naturally derived minerals. It is a great soil amendment and fertilizer for all plants. The powder is versatile and easy to use. However, it is not certified for human consumption.