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Botanicare Cal-Mag Plus est un engrais liquide 2-0-0 à base de calcium, magnésium et fer, conçu pour corriger les carences courantes et assurer une nutrition équilibrée à chaque étape de la croissance. Cet engrais contient les minéraux essentiels au développement harmonieux des plantes, notamment les plantes à forte fructification et les annuelles à floraison rapide.
Cal-Mag Plus apporte un équilibre précis de calcium, de magnésium et de fer, avec des proportions optimales pour assurer une croissance constante des plantes, de la germination à la fructification. Enrichi d'un mélange exclusif d'oligo-éléments sélectionnés, il fournit un supplément de minéraux lorsque les nutriments de base sont insuffisants. Des niveaux adéquats de calcium et de magnésium permettent aux plantes de conserver une structure et un développement cellulaire plus robustes, les aidant ainsi à rester vigoureuses malgré une croissance accélérée.
Cette formule est conçue pour prévenir les carences courantes qui apparaissent rapidement chez les plantes à croissance rapide. Elle favorise également une meilleure circulation des minéraux en optimisant l'absorption des nutriments, ce qui se traduit par un développement plus robuste des plantes tout au long de leur cycle de croissance. Chez les plantes fruitières et à fleurs, ce même apport minéral est essentiel au développement floral et à la performance globale de la plante. Cal-Mag Plus est présenté comme un moyen d'optimiser les rendements des cultures exigeantes sans complexifier votre approche nutritionnelle.
Cal-Mag Plus est également reconnu pour maintenir l'équilibre nutritif lors de l'utilisation d'eau osmosée et pour compenser la carence naturelle en calcium liée à la fibre de coco. Il constitue ainsi une option pratique pour les cultivateurs travaillant avec des substrats pauvres en calcium ou dans des installations où la composition chimique de l'eau et du substrat peut entraîner des carences en minéraux essentiels. Ce même apport minéral contribue à la résilience des plantes : Cal-Mag Plus favorise une croissance végétative vigoureuse et renforce les parois cellulaires à mesure que les plantes développent leur masse.
Pour des résultats ciblés, Cal-Mag Plus est conçu pour prévenir la nécrose apicale des tomates et des poivrons et réduire le brunissement des pointes de la laitue. Il convient aux systèmes de culture en terre, en fibre de coco et hydroponiques, et peut également être appliqué par voie foliaire. Si vous recherchez un engrais simple à base de calcium et de magnésium, contenant également du fer et des oligo-éléments, ce produit est idéal pour les cultivateurs visant une croissance régulière et une floraison et une fructification de qualité supérieure, notamment en systèmes d'osmose inverse ou en fibre de coco.
Step-by-step mixing and feeding instructions for Botanicare Cal-Mag Plus - 1 gallon.
Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Botanicare Cal-Mag Plus - 1 gallon well before every use. Using the feeding schedule below, measure the recommended dose and add it directly to the water while stirring. Allow the solution to mix fully before adding any other fertilizers, additives, or supplements.
Always add nutrients to water — not the other way around. Mix thoroughly between products to ensure an even, stable nutrient solution.
Vegetative stage — Cal-Mag Plus
Flowering stage — Cal-Mag Plus
Warning – Important Safety Information
This product may cause mild skin irritation and eye irritation. Avoid unnecessary contact with skin, eyes, and clothing. Use only as directed.
General safety precautions
Read and follow all instructions on the product label and any accompanying documentation before use. Keep out of reach of children and pets. Do not ingest. Avoid breathing vapours, mist, or dust that may be generated during handling or use.
Wear appropriate personal protective equipment (PPE), such as protective gloves, long sleeves, long pants and closed-toe footwear. When there is a risk of splashing or airborne particles, use safety glasses or other suitable eye and face protection.
First aid – skin contact
IF ON SKIN OR HAIR: Remove contaminated clothing immediately. Rinse skin with clean water for several minutes, then wash with mild soap and water. If irritation or redness develops and persists, seek medical attention. Wash contaminated clothing before reuse.
First aid – eye contact
IF IN EYES: Rinse cautiously with clean water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. If irritation persists, obtain medical advice.
First aid – ingestion and inhalation
IF SWALLOWED: Rinse mouth thoroughly with water. Do not induce vomiting unless instructed by a medical professional. Seek medical attention if you feel unwell.
IF INHALED: Move the person to fresh air and keep them comfortable for breathing. If coughing, breathing difficulty, dizziness or other symptoms occur, seek medical assistance.
Storage and handling
Store this product in its original closed container, in a cool, dry and well-ventilated area. Protect from extreme temperatures and direct sunlight. Keep container tightly sealed when not in use.
Avoid release to drains, natural waterways or outdoor soil. Dispose of unused product and empty containers in accordance with local regulations and the directions on the label.
Important: If medical advice is needed, keep the product label or container available. Always follow the specific instructions and safety recommendations provided by the manufacturer. This safety notice is intended as general guidance and does not replace official label directions or documentation.
| Total Nitrogen (N) | 2.0% |
|---|---|
| Calcium (Ca) | 3.2% |
| Total Magnesium (Mg) | 1.2% |
| Chelated Iron (Fe) | 0.1% |
| EDTA (Chelating Agent) | 0.49% |
Calcium is important because it builds and stabilizes plant cells as they form, acting as the structural support that keeps new growth strong and functional. Unlike other nutrients that drive color or speed of growth, calcium’s role is unique because it controls cell wall strength and membrane stability, making it essential for healthy roots, shoots, and long-term plant resilience rather than quick visual results.
Calcium chloride is different because it dissolves extremely fast and can deliver calcium quickly to new growth, which is where calcium problems show up first. It’s important because calcium supports strong new tissue and stable growth tips, but it’s unique because it also adds chloride and has higher salt strength, so it must be used carefully to avoid leaf burn or root-zone salt stress.
Calcium nitrate is important because it supplies calcium in a fast, highly available form that supports strong new growth and healthy root tips, while also providing nitrate nitrogen for steady, usable growth energy. It’s unique because it delivers calcium together with nitrate nitrogen, making it especially effective during rapid growth phases when plants need both structure-building calcium and immediately available nitrogen at the same time.
Chelated iron is important because it keeps iron usable for plants even when growing conditions would normally lock iron out, helping prevent the classic yellow-new-leaf symptom caused by low chlorophyll production. It is unique from other iron sources because the chelation protects iron from becoming insoluble, making it a more reliable way to correct iron-related chlorosis when regular iron can fail.
EDTA chelation is important because it helps key micronutrients stay dissolved and available for roots instead of reacting, precipitating, or becoming locked out, which prevents common deficiency symptoms like pale new growth. It’s unique because it offers dependable micronutrient stability in mildly acidic growing conditions, making it especially useful for consistent feeding when pH is already well-managed.
Total magnesium is important because magnesium powers chlorophyll and energy use, helping plants stay green, turn light into growth, and use other nutrients efficiently—and it’s unique because its problems often come from nutrient balance and uptake competition, not just a simple shortage.
Total Nitrogen is important because it directly drives leafy growth, chlorophyll production, and overall growth speed, which sets the pace for the entire plant. It’s unique because the “total” number can include different nitrogen forms that behave differently in the root zone, meaning the same total amount can produce very different results depending on the nitrogen type and plant stage.
Iron EDTA keeps iron dissolved and available long enough for roots to absorb it, which is why it can quickly improve new growth color when iron is tied up in the root zone. It’s unique because the EDTA chelate balances stability and accessibility, making iron more reliably usable in mildly acidic to near-neutral conditions compared to many non-chelated iron forms.
Magnesium nitrate supplies fast-available magnesium for chlorophyll and photosynthesis while also adding nitrate nitrogen that can speed up greening and growth. It’s unique because it can correct magnesium-related yellowing quickly but also changes growth momentum, so it’s most valuable when magnesium is truly limiting and the plant can safely use extra nitrate.

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