Botanicare Cal Mag Plus

Botanicare Cal Mag Plus is a concentrated calcium, magnesium, iron, and trace mineral supplement designed to support vigorous plant development throughout vegetative growth, flowering, and fruit production.

It is formulated to supplement nutrient programs that may not provide enough available calcium and magnesium, particularly when using reverse osmosis water, coco coir, or intensive feeding programs where plants can rapidly consume these essential elements.

• Essential Minerals: Calcium, Magnesium & Iron
• Application Rate: 2 to 5 ml per Gallon
• Growing Media: Hydroponics, Soil & Coco
• Best For: RO Water & High Demand Crops

Calcium plays an important structural role within plant tissue, helping support strong cell walls, developing roots, stems, leaves, flowers, and fruit. Magnesium is essential to chlorophyll production and photosynthesis, while iron supports chlorophyll formation and numerous metabolic processes.

Cal Mag Plus combines these three essential elements with additional trace minerals, vitamins, amino acids, and botanical extracts to help maintain balanced plant nutrition throughout demanding growth cycles.

The formula is especially useful for heavily fruiting and flowering plants that can develop calcium or magnesium deficiencies during rapid development.

When incorporated into a complete nutrient program, Cal Mag Plus can help support nutrient uptake, plant tissue development, vigorous growth, flower development, fruit production, and overall crop quality.

It can be used with Botanicare nutrients or incorporated into other compatible feeding programs and is suitable for hydroponic systems, soil gardens, coco coir, and container gardening.

Calcium Support

Calcium is essential for the development of strong plant tissue and healthy cell structure. Adequate calcium availability helps support strong cell walls, healthy root development, stem strength, new leaf growth, flower formation, fruit development, and resistance to environmental stress.

Cal Mag Plus can also help address calcium related problems such as blossom end rot in tomatoes and peppers and tip burn in lettuce when these issues are associated with inadequate calcium availability.

Magnesium Support

Magnesium is a central component of chlorophyll and plays an important role in photosynthesis. Proper magnesium nutrition helps support chlorophyll production, healthy green foliage, photosynthetic activity, energy production, enzyme activity, nutrient utilization, and consistent vegetative growth. Magnesium supplementation can help prevent symptoms associated with deficiency, including interveinal chlorosis and reduced growth.

Iron Support

Iron is another essential micronutrient involved in chlorophyll formation and numerous plant metabolic processes. Maintaining adequate iron availability helps support healthy foliage color, chlorophyll synthesis, enzyme activity, new plant growth, and efficient metabolic function.

Balanced Calcium, Magnesium and Iron

Botanicare developed Cal Mag Plus to provide calcium, magnesium, and iron in a balanced supplemental formula. This makes it particularly useful when using reverse osmosis water, growing in coco coir, running intensive nutrient programs, growing heavily fruiting plants, growing fast developing flowering plants, or correcting nutrient programs that provide insufficient calcium or magnesium.

Designed for Reverse Osmosis Water

Reverse osmosis filtration removes a large percentage of naturally occurring dissolved minerals from water. While this provides a clean starting point for nutrient programs, it can also remove calcium and magnesium that plants would otherwise receive from the water supply. Botanicare recommends Cal Mag Plus as a supplemental source when using reverse osmosis water.

Ideal for Coco Coir

Coco coir can naturally bind calcium and create increased demand for calcium supplementation. Cal Mag Plus is specifically designed to help compensate for this calcium draw and maintain a more balanced nutrient environment. This makes it useful for coco coir, coco based blends, soilless media, recirculating systems, and drain to waste systems.

Supports Fruiting Plants

Fruiting plants can have significant calcium and magnesium requirements during periods of rapid development. Cal Mag Plus can support crops such as tomatoes, peppers, cucumbers, strawberries, melons, and other fruit bearing plants. Adequate calcium availability is particularly important during fruit development because calcium movement within plants can be limited.

Helps Prevent Blossom End Rot

Blossom end rot in crops such as tomatoes and peppers is commonly associated with inadequate calcium reaching developing fruit. Cal Mag Plus supplies supplemental calcium while helping support overall mineral availability within the nutrient solution.

Helps Reduce Tip Burn

Lettuce and other rapidly growing leafy crops can experience tip burn when calcium availability does not keep pace with rapid tissue development. Supplemental calcium can help maintain stronger developing tissue during periods of fast growth.

Supports Nutrient Uptake

Cal Mag Plus is formulated to work alongside complete nutrient solutions. When used as part of a balanced feeding program, it can help support the uptake and utilization of essential minerals required for plant growth, cell development, photosynthesis, flowering, fruiting, and water uptake.

Trace Mineral Support

In addition to calcium, magnesium, and iron, the supplied product information states that Cal Mag Plus contains additional trace elements including boron, zinc, manganese, molybdenum, copper, cobalt, and iodine. These micronutrients participate in numerous enzyme systems and physiological processes within plants.

Amino Acids and Botanical Extracts

The formula also contains beneficial vitamins, twenty essential amino acids, and selected botanical plant extracts. These ingredients complement the core mineral formula and help provide broader nutritional support throughout plant development.

Suitable for Multiple Growing Methods

Botanicare Cal Mag Plus can be used with hydroponic systems, soil gardens, coco coir, soilless mixes, container gardens, fertigation systems, indoor gardens, greenhouse crops, and outdoor container plants.

Compatible With Complete Nutrient Programs

Cal Mag Plus is intended as a supplement rather than a complete fertilizer. It can be used alongside Botanicare nutrient programs, compatible base nutrients, hydroponic nutrient solutions, coco specific feeding programs, and soil feeding programs. Always monitor the complete nutrient program rather than treating individual supplements independently.

Feeding Schedule

The supplied Botanicare feeding chart provides application amounts in milliliters per gallon of water. For seedlings and clones, the chart specifies 2 ml per gallon. During vegetative growth, bloom transition, and the earlier flowering and fruiting stages, the chart specifies approximately 3 to 5 ml per gallon depending on plant needs. Botanicare notes that application amounts may vary depending on plant type and requirements.

Recommended Application Rates

According to the Botanicare feeding schedule:

• Seedlings and clones: 2 ml per gallon
• Vegetative growth: 3 to 5 ml per gallon
• Bloom transition: 3 to 5 ml per gallon
• Flowering and fruiting: 3 to 5 ml per gallon through the primary feeding period
• Ripening: 0 ml per gallon
• Flush: 0 ml per gallon

The chart identifies the measurements as milliliters per gallon, with 1 gallon equal to approximately 3.8 liters.

Measurement Conversions

Botanicare provides the following measurement conversions:

• 1/2 teaspoon equals 2.5 ml
• 1 teaspoon equals 5 ml
• 1 tablespoon equals 15 ml
• 1 ounce equals 30 ml

Foliar Application

Botanicare also provides directions for foliar use. Add 1 tablespoon, or 15 ml, per gallon of water. Mix thoroughly and adjust the solution to a pH between 6.2 and 7.0 before application.

Mixing Recommendations

For best results:

• Start with clean water.
• Add Cal Mag Plus according to the desired feeding rate.
• Mix thoroughly.
• Add other compatible nutrients according to their instructions.
• Check nutrient concentration.
• Adjust pH after the solution has been completely mixed.
• Monitor plants and adjust feeding based on crop requirements.

Application amounts can vary depending on plant variety, environmental conditions, water chemistry, growing medium, and the rest of the nutrient program.

When Cal Mag Supplementation May Be Useful

Supplemental calcium and magnesium may be beneficial when gardeners observe interveinal chlorosis, reduced growth, upward leaf curl, weak new growth, tip burn, blossom end rot, reduced flower or fruit development, or nutrient programs using reverse osmosis water. Symptoms can have multiple causes, so growers should evaluate pH, nutrient concentration, environmental conditions, irrigation practices, and overall nutrient balance before increasing supplementation.

Recommended Use Practices

• Shake the container before use.
• Measure accurately.
• Use clean measuring equipment.
• Add to water according to the feeding program.
• Mix thoroughly before application.
• Monitor nutrient concentration.
• Monitor pH after mixing.
• Adjust application rates according to plant response.
• Do not exceed manufacturer recommendations unnecessarily.
• Store the container tightly closed when not in use.

Storage

The Botanicare Safety Data Sheet instructs users to store the product in its original container in a dry, cool, well ventilated area protected from direct sunlight. The container should remain tightly closed, upright, and properly labeled, and should be kept away from incompatible materials, food, and drink.

Handling and Safety

The Safety Data Sheet classifies Cal Mag as a liquid and identifies it as capable of causing serious eye damage. Eye or face protection is recommended when handling the concentrated product. Users should avoid contact with eyes, skin, and clothing and should avoid breathing mist or vapor. Appropriate protective equipment should be used when handling concentrated product.

Eye Protection — Chemical splash goggles or appropriate eye and face protection should be used when exposure to liquid splashes is possible.

Hand Protection — Chemical resistant, impervious gloves should be used when a risk assessment indicates they are necessary.

Physical Properties

According to the Safety Data Sheet, Cal Mag is a liquid, dark amber in color, completely soluble in water, with a boiling point of approximately 212°F (100°C).

Main Reported Ingredients

The Safety Data Sheet identifies the mixture as containing calcium ammonium nitrate at approximately 10% to less than 25%, and magnesium nitrate hexahydrate at approximately 10% to 25%.

Spill Handling

For spills, prevent material from entering drains, waterways, or confined areas. The Safety Data Sheet recommends containing the liquid with noncombustible absorbent material such as sand, earth, vermiculite, or diatomaceous earth and disposing of collected material according to applicable regulations.

What's Included

• Botanicare Cal Mag Plus Plant Supplement
• Selected Container Size
• Manufacturer Label and Application Directions

Container size depends on the option selected.

Specifications