15 Amazing Calcium Fertilizer for 2024

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Introducing 15 Amazing Calcium Fertilizer for 2023: Discover the Revolutionary Solutions for Stronger and Healthier Plants! As a content writer expert, I am thrilled to present to you the latest advancements in calcium fertilizers that are set to revolutionize plant growth and yield in the coming year. Calcium plays a crucial role in enhancing root development, promoting nutrient absorption, and strengthening plant cell walls. With these 15 exceptional calcium fertilizers, gardeners, farmers, and horticulturists will have access to an impressive range of innovative products designed to optimize plant health and productivity. Stay tuned as we delve into this exclusive compilation of calcium fertilizers that are sure to make a significant impact in the world of agriculture and horticulture.

Southern Ag Calcium Nitrate

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Overall Score: 8.5/10

The Southern Ag Calcium Nitrate is a high-quality fertilizer that provides an excellent source of calcium and nitrogen. With a 15.5% nitrogen and 19% calcium content, it is readily water soluble, making it an effective and efficient solution for preventing calcium deficiency in plants. This product has received positive reviews for its ability to prevent blossom end rot in tomatoes and benefit other plants like bell peppers and onions. It is also praised for enhancing rapid growth and acting as a good plant food. While some customers have reported issues with contaminants that can cause pump blockages, the majority of users find it to be a valuable product for their gardening needs. Overall, the Southern Ag Calcium Nitrate is a reliable option for plant nutrition and protection.

The Southern Ag Calcium Nitrate is a reliable and effective solution for preventing calcium deficiency in plants. It excels in preventing blossom end rot in tomatoes and offers benefits to other plants as well. While there have been isolated reports of contaminants causing pump blockages, the majority of users find it to be a valuable and beneficial product for their gardening needs. If you’re looking for a high-quality fertilizer that provides both calcium and nitrogen, the Southern Ag Calcium Nitrate is worth considering.

OMRI Organic Solution Grade Calcium

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Overall Score: 9/10

Down to Earth OMRI Organic Solution Grade Calcium 96 is an ultra-fine and highly reactive limestone powder that provides immediate availability of this essential nutrient for plants and microflora. With its high neutralizing value, this solution grade powder can be applied at lower rates for quick soil pH changes. The 325 mesh powder is designed for efficient delivery and immediate uptake and can be used in drip irrigation or spray applications. Offering a multitude of benefits to plants, soils, and soil biology, this high-quality calcium is recommended for achieving a pH between 6.0 and 7.0. Proper application rates may vary based on the soil type.

Down to Earth OMRI Organic Solution Grade Calcium 96 is a top-quality product that effectively delivers immediate calcium availability to plants and microflora. With its ultra-fine and highly reactive powder, it ensures quick soil pH changes and provides a multitude of benefits to plants, soils, and soil biology. Its efficient delivery and immediate uptake make it a convenient choice for use in drip irrigation or spray applications. The positive customer ratings and reviews further validate its effectiveness and value for money. If you’re looking to improve the health and vitality of your plants, this organic calcium solution is definitely worth considering.

Bonide Rot-Stop Tomato Blossom End Rot Fertilizer

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Overall Score: 8/10

Bonide Rot-Stop Tomato Blossom End Rot is a concentrated liquid garden fertilizer designed to correct calcium deficiency in indoor and outdoor plants. It effectively controls blossom end rot on tomatoes by adding nutritional calcium derived from calcium chloride. The fertilizer can also be used on cucumbers, melons, and peppers to address calcium deficiencies. Easy to apply, it quickly mixes with water and can be sprayed onto foliage using a hose-end sprayer or tank sprayer. However, it should be used as a supplement to a regular fertilization program and may not provide all the necessary nutrients on its own. With positive customer ratings and reviews, this product has proven to be effective in addressing blossom end rot and promoting healthy plant growth.

Bonide Rot-Stop Tomato Blossom End Rot is a reliable and effective solution for addressing calcium deficiency and controlling blossom end rot in tomato plants. It offers the convenience of easy application and has garnered positive customer feedback. While it is not a standalone fertilizer, it serves well as a supplement to a regular fertilization program. With its versatile usage for cucumbers, melons, and peppers, it is a valuable addition to any garden. If you’re struggling with blossom end rot or calcium deficiency in your plants, give Bonide Rot-Stop a try and watch your plants thrive!

Concentrated Calcium Fertilizer for Garden & Hydroponics

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Overall Score: 8.2/10

Enhance the health and growth of your plants with the Cal Mag Plant Supplement. This concentrated calcium fertilizer is designed for use in gardens and hydroponics. With a bioactivated formula that includes calcium, magnesium, and micronutrients, it promotes optimal nutrient uptake and prevents common growth deficiencies. It is compatible with any nutrient system and is 100% organic, with no harmful chemicals. The product comes in a quart size (32 oz) and has received a customer rating of 4.6 out of 5.

The Cal Mag Plant Supplement is a highly effective calcium fertilizer for plants, designed to enhance growth and prevent deficiencies. Its bioactivated formula ensures optimal nutrient uptake, resulting in healthier stalks and leaves. It is compatible with any nutrient system and does not contain any harmful chemicals like EDTA. The product has received positive reviews from customers, indicating its effectiveness in improving plant health and productivity. While the measurement units in ml can be confusing, the overall value and benefits of this supplement make it a great choice for gardeners and hydroponics enthusiasts. Whether you’re growing vegetables or flowers, this Cal Mag Plant Supplement can help you achieve impressive results.

Espoma Organic Tomato-Tone Fertilizer

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Overall Score: 9/10

Espoma Organic Tomato-Tone 3-4-6 with 8% Calcium is an organic fertilizer designed for all types of tomatoes and vegetables. It promotes flower and fruit production, resulting in plump, abundant tomatoes. Made from a rich blend of natural and organic ingredients, this fertilizer is enhanced with the exclusive Bio-tone formula and contains 8% calcium to help prevent blossom end rot. Tomato-Tone is environmentally safe, with no sludges or toxic ingredients. It is approved for organic gardening and requires no mixing. Simply apply every two weeks around the drip line of the plant and water thoroughly. The Espoma Company, a leader in natural organics since 1929, produces this product in the USA.

Espoma Organic Tomato-Tone Fertilizer is a top choice for organic gardeners looking to maximize the growth and production of tomatoes and vegetables. With its rich blend of natural and organic ingredients, enhanced with the exclusive Bio-tone formula, this fertilizer delivers outstanding results. Customers have praised its ability to produce monster tomatoes and save struggling plants. It is highly recommended by Master Gardeners and has proven to be effective even in extreme heat. While some customers have expressed concerns about increasing costs, the overall feedback has been positive. Give your plants the nutrients they need with Espoma Organic Tomato-Tone and enjoy a bountiful harvest!

ENVY Calcium Nitrate Solution

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Overall Score: 8/10

The ENVY Solution Grade Calcium Nitrate is a top-quality product designed to prevent blossom end-rot caused by calcium deficiency in tomatoes and peppers. It provides an excellent source of calcium to treat deficiencies and keep your plants healthy. The calcium nitrate is pure and concentrated, with high nutrient concentrations of 19% calcium and 15.5% nitrogen. It is 100% water-soluble, ensuring complete solubility and superior solution disbursement. The resealable pouches and included measuring scoop make it convenient for long-term usage and storage. This greenhouse-grade calcium nitrate is also ideal for hydroponic setups, as it keeps systems and pumps clean without leaving an oily skim on the water.

The ENVY Solution Grade Calcium Nitrate is a must-have product for any gardener dealing with calcium deficiencies in tomatoes and peppers. Its high-quality formulation provides an excellent source of calcium, preventing blossom end-rot and promoting healthy plant growth. The 100% water-soluble formula ensures easy application and superior disbursement. Additionally, the product’s clean and pure nature keeps hydro systems and pumps free from oily skims. With convenient resealable pouches and a measuring scoop, it offers long-term usage and storage. Although some users had mixed results, overall, this calcium nitrate is a reliable solution for improving plant health and preventing calcium deficiency issues.

Calcium Nitrate 15.5-0-0 Fertilizer – 5 POUNDS

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Overall Score: 8/10

Boost the growth of your plants with Calcium Nitrate 15.5-0-0 Fertilizer Bulk Pricing. This agricultural-grade fertilizer is fully water soluble, making it easy for your plants to absorb. With its high nitrogen level, it promotes lush green vegetative growth. Additionally, calcium in the fertilizer increases plant resilience and prevents calcium deficiencies. Packed by PowerGrow Systems and made in the USA, this 5-pound bag is perfect for both hydroponic and soil-based gardening. Customers have praised its effectiveness for fixing low nitrogen issues, promoting greener and healthier plants, and providing a good source of calcium nitrate. While it may require slightly more product compared to other leading brands, the affordable price makes it a great choice for garden enthusiasts. Improve the health and productivity of your plants with Calcium Nitrate 15.5-0-0 Fertilizer Bulk Pricing!

Calcium Nitrate 15.5-0-0 Fertilizer Bulk Pricing is an excellent choice for garden enthusiasts who want to promote the growth and resilience of their plants. With its high nitrogen content and water solubility, it ensures easy uptake by your plants, resulting in lush green vegetative growth. The added calcium prevents deficiencies and enhances plant resilience. While it may require slightly more product compared to other leading brands, the affordable price makes it a great value for money. Customers have noticed significant improvements in plant health and growth after using this fertilizer. Overall, if you’re looking for a reliable fertilizer that provides a good source of calcium nitrate, Calcium Nitrate 15.5-0-0 Fertilizer Bulk Pricing is definitely worth considering!

Down to Earth Liquid Calcium Fertilizer

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Overall Score: 8/10

The Down to Earth Liquid Calcium Fertilizer is an essential product for plant growth and development. With its unique organic acids, it enhances nutrient uptake, strengthens cell wall membranes, and promotes the translocation of proteins and sugars throughout plant tissues. This water-soluble fertilizer is designed to prevent calcium deficiency, which can cause poor root development and abnormalities in fruits and vegetables. It is OMRI listed and CDFA registered as an organic input material. The 5.0% formula ensures optimal results. With a dimension of 5.00Lx2.00Wx8.00H, it is convenient to handle and apply.

The Down to Earth Liquid Calcium Fertilizer is a valuable organic solution for promoting healthy plant growth. Its unique formula and chelation process ensure optimal absorption and utilization. It is particularly effective for acid-loving plants and can prevent calcium deficiency and fruit abnormalities. However, users should be cautious with potential leakage during shipment and dilute the product properly to avoid plant burn. Overall, it is a reliable fertilizer that can benefit any gardener or farmer looking to enhance the health and productivity of their plants.

CalMag + Iron Plant Supplement

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Overall Score: 8/10

The CalMag + Iron Plant Supplement by Blue Planet Nutrients is a versatile and essential formula for all types of plants. It provides plants with calcium, magnesium, and iron, which are crucial for photosynthesis, nutrient absorption, and overall plant development. With the ability to prevent and correct common deficiencies like blossom end rot and leaf curl, this product ensures healthy growth in your garden. This concentrated supplement can be easily used by diluting a small amount per gallon of water, making it suitable for various gardening methods like hydroponics, soil, and aeroponics. Blue Planet Nutrients is a trusted brand known for producing high-quality garden fertilizers and supplements since 2010. Available in a quart size, this supplement is a must-have for any plant enthusiast.

The CalMag + Iron Plant Supplement from Blue Planet Nutrients is an essential addition to any gardener’s toolkit. With its ability to prevent and correct common deficiencies, it ensures healthy growth and development in plants. The versatile formula makes it suitable for all types of gardens, and its easy-to-use nature allows for hassle-free application. The reliable brand reputation and positive customer reviews make it a trusted choice among plant enthusiasts. While some users may not notice a significant difference, overall, this supplement proves to be effective in improving plant health. Enhance the vitality of your plants with the CalMag + Iron Plant Supplement and witness impressive results in your garden.

Organic Garden Gypsum Calcium Sulfate

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Overall Score: 8.5/10

Down to Earth Organic Garden Gypsum is a five-pound box of all-natural mineral fertilizer. It is commonly used to reduce soil compaction and increase drainage in heavy clay soils. This gypsum is also used to help remediate and revitalize alkaline, sodic, or saline soils. It improves the physical condition of landscape, lawn, and garden soils while adding calcium and sulfur. The prilled and fast-acting formula is easy to apply, loosening clay and improving soil quality. This product is a registered Organic Input Material by CDFA. It is a highly-rated and recommended amendment for growing in coco coir. It is pelletized for slow, balanced release and can even be used as a top dressing. Down to Earth Organic Garden Gypsum is a must-have for any garden enthusiast seeking healthy, thriving plants.

Down to Earth Organic Garden Gypsum is a highly recommended and effective soil amendment for any garden enthusiast. It helps improve soil quality, reduces compaction, and increases drainage. The addition of calcium and sulfur promotes healthy plant growth and helps revitalize alkaline or saline soils. Although the price may be slightly higher compared to local stores, the product’s high quality and long-lasting effects make it worth the investment. Whether you’re an experienced gardener or just starting out, Down to Earth Organic Garden Gypsum is a must-have for achieving a thriving and vibrant garden.

Biomin® Calcium | Complexed Nutrient | SaferGro 1-Gallon

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Overall Score: 8/10

Biomin® Calcium is a complexed nutrient from SaferGro, designed to provide rapid leaf uptake and utilization, improving yield and fruit quality. It is compatible with most fertilizers and pesticides, allowing for easy integration into existing farming routines. The fast-acting formula corrects deficiencies quickly, ensuring plants receive the necessary calcium for optimal growth. With its certified organic composition, Biomin® Calcium offers a natural and sustainable solution for enhancing plant health and productivity. Whether used as a soil additive or for hydroponic systems, this product has received high praise from users who have seen positive results in their gardens.

Biomin® Calcium by SaferGro is a highly effective complexed nutrient that provides fast-acting correction of calcium deficiencies. Its compatibility with most fertilizers and pesticides makes it a versatile option for farmers and gardeners. The organic certification ensures the use of natural and sustainable ingredients, appealing to those seeking environmentally-friendly solutions. While the directions may require some trial and error for correct application, once optimized, Biomin® Calcium delivers impressive results, improving both yield and fruit quality. Whether you’re a professional farmer or a hobbyist gardener, this product is worth considering for healthier and more productive plants.

Humboldts Secret CalMag & Iron – Hydroponic Nutrient Supplement

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Overall Score: 8.5/10

The Humboldts Secret Calcium, Magnesium and Iron Supplement is a highly effective liquid nutrient fertilizer that supports the vegetative and flowering stages of plants. Designed to address common plant deficiencies, this well-balanced formula provides a rich source of calcium, magnesium, and chelated iron. It improves nutrient uptake and absorption, making it suitable for hydroponic, soil, and container gardens. The supplement is particularly optimal for plants growing in coco coir medium and reverse osmosis water. With a customer rating of 4.6/5, this product has received positive reviews for its ability to correct plant deficiencies and enhance plant health and yield.

The Humboldts Secret Calcium, Magnesium and Iron Supplement is a must-have for any garden enthusiast. Its ability to correct common plant deficiencies and support healthy plant growth makes it a top choice for hydroponic, soil, and container gardens. The formula’s efficiency in promoting nutrient uptake and absorption ensures the vegetative and flowering stages are successful. While the package condition may be a concern, the quality of the product outweighs this drawback. With positive customer reviews and a high rating, this supplement is a reliable choice for ensuring strong and thriving plants.

Garden Soil Amendment Fertilizer

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Overall Score: 8.5/10

Enhance your garden soil and maximize fertilizer performance with Organic Gypsum. This all-natural mineral fertilizer is made in the USA and approved by the Organic Materials Review Institute (OMRI) for use in organic production. It supplies essential nutrients like calcium and sulfur to improve plant growth, repairs soil damage, and cures blossom end rot in tomatoes. The gypsum also helps in mushroom cultivation by improving substrate structure and water-holding capacity. With resealable, easy-to-pour packaging and a pH-neutral formula, this multipurpose garden soil amendment is perfect for various plants, including container garden plants. Trust Cz Garden Organics for premium-grade custom soil amendment blends and fertilizers.

Organic Gypsum is a reliable and effective garden soil amendment. It not only supplies essential nutrients to enhance plant growth and repair soil damage, but also addresses common issues like Blossom End Rot in tomatoes. The gypsum’s versatility extends to mushroom cultivation as well. With its resealable packaging and easy pour design, it’s convenient for long-term storage and application. While there may be confusions regarding the ‘organic’ labeling, rest assured that this product is approved for organic production. Overall, Cz Garden Organics delivers a premium-grade custom soil amendment blend for an organic garden. Enhance your gardening experience with this trusted product!

Cal-BOR Liquid Fertilizer

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Overall Score: 8.7/10

Cal-BOR Liquid Fertilizer is a powerful combination of calcium and boron that promotes plant turgidity and enhances flower development and quality. It can effectively correct calcium and boron deficiencies in a variety of plants including fruit and nut trees, hemp, grapes, berries, vegetables, grasses, and ornamentals. The foliar application allows for quick and efficient uptake of calcium and boron, preventing issues like fruit splitting and poor shelf life. Boron plays a crucial role in improving calcium uptake and facilitating carbohydrate transport, ensuring better flowering and fruit formation. Additionally, it aids in the quick repair of damaged plant tissue if applied within 48 hours. Invest in Cal-BOR to optimize plant growth and enhance the overall health and productivity of your plants.

Cal-BOR Liquid Fertilizer is a reliable and effective solution for addressing calcium and boron deficiencies in plants. Its unique combination enhances flower development, quality, and overall plant health. By providing quick and efficient uptake of essential nutrients, it promotes better fruit formation, prevents splitting, and improves shelf life. Suitable for a variety of plants, this liquid fertilizer ensures that your garden or crops thrive. Investing in Cal-BOR will help you achieve vibrant and productive plants, resulting in a bountiful harvest. Give your plants the boost they need with Cal-BOR’s calcium and boron formula.

HOSS Complete Organic Fertilizer

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Overall Score: 8/10

The HOSS Complete Organic Fertilizer is a versatile and balanced 5-4-3 formula that is perfect for nourishing vegetables, flowers, herbs, and more in your garden. This fertilizer is made from pelleted hen manure and is certified organic by OMRI, ensuring it is safe to use in any growing situation. The pelleted form makes it easy to apply and spread around plants using a measuring cup or pitcher. Additionally, it contains 9% calcium, which is beneficial for tomatoes, peppers, and eggplants, helping to prevent blossom end rot. You can use this fertilizer as a pre-plant amendment and continue to feed your plants as they grow. Each bag weighs 3.5 lbs.

The HOSS Complete Organic Fertilizer is a reliable choice for any gardener who wants to provide essential nutrients to their vegetables, flowers, and herbs. Its organic composition and OMRI certification guarantee its safety, making it suitable for organic growing. The pelleted form ensures easy application, and the added calcium is a great advantage for tomatoes, peppers, and eggplants. Whether you use it as a pre-plant amendment or continue to feed your plants as they grow, this fertilizer offers convenience and effectiveness. With its balanced formulation, your plants will thrive and produce abundant, healthy yields. Enhance your gardening experience with the HOSS Complete Organic Fertilizer.

BUYER'S GUIDE: Calcium Fertilizer

Calcium is the backbone of strong and healthy plant growth. Enhancing nutrient uptake and promoting cell wall development, calcium fertilizers are essential for overall plant vitality. Whether you are a seasoned gardener or a beginner, selecting the right calcium fertilizer can be a daunting task. Here is a comprehensive buyer's guide to help you make an informed decision:

What to Consider When Buying Calcium Fertilizer:

• Calcium Content: Consider the concentration of calcium in the fertilizer, typically expressed as a percentage. Higher calcium concentration can provide better results for calcium-demanding plants.
• Solubility: Choose a calcium fertilizer that is readily soluble in water for efficient absorption by plants. Soluble calcium enables quick and easy uptake, promoting better plant development.
• pH Compatibility: Check if the fertilizer's pH level is compatible with your soil or growing medium. Calcium fertilizers with a slightly acidic to neutral pH are usually more favorable for a wide range of plants.
• Application Method: Determine whether you prefer a granular, liquid, or foliar application method. Each has its own benefits, depending on your gardening practices and the specific needs of your plants.
• Nutrient Balance: Assess the overall nutrient balance in the fertilizer. Some calcium fertilizers come with additional elements like nitrogen, phosphorus, or potassium, which can play a supplemental role in plant growth.
• Organic vs. Synthetic: Consider whether you prefer an organic or synthetic calcium fertilizer. Organic options are derived from natural sources and tend to release nutrients slowly, while synthetic fertilizers provide immediate bioavailable calcium.
• Specific Plant Requirements: Different plants have varying calcium requirements. Research the specific needs of the plants you are growing to ensure you select a calcium fertilizer that meets their demands.

Benefits of Using Calcium Fertilizer:

• Enhances root development and overall plant growth
• Strengthens cell walls and improves disease resistance
• Aids in regulating water movement within plants
• Facilitates nutrient uptake and assimilation
• Promotes fruit development and reduces susceptibility to physiological disorders

How to Apply Calcium Fertilizer:

• Granular Fertilizer: Distribute the granules evenly over the soil surface, avoiding direct contact with plant stems. Follow the recommended dosage and incorporate the granules into the soil by gently raking or watering them in.
• Liquid Fertilizer: Dilute the liquid fertilizer according to the product instructions. Apply it directly to the soil around the base of the plant, taking care to avoid foliage. Irrigate the area afterward to help the plant absorb the nutrients.
• Foliar Spray: Prepare a solution of the calcium fertilizer mixed with water, following the recommended dosage. Spray the foliage of the plant, ensuring complete coverage, including both sides of the leaves. Perform spraying during low-light conditions to minimize leaf burn risk.
• Seed Treatment: Apply a small amount of calcium fertilizer to the seeds before planting, adhering to the recommended dosage. Mix the seeds thoroughly to ensure even distribution, and proceed with sowing as usual.