Natural Magnesium & Micronutrient Supplement for Complete Plant Nutrition

Vitamin Sea is Growganica's natural magnesium for plants — a concentrated micronutrient supplement derived from ocean minerals that delivers magnesium, iron, manganese, zinc, boron, and a full spectrum of trace elements your plants need but rarely get. If your plants show yellowing leaves, stunted growth, or poor fruit development, chances are they're missing the micronutrients that Vitamin Sea provides.

Why Your Plants Need Vitamin Sea

Magnesium for chlorophyll — Magnesium is the central atom in every chlorophyll molecule. Without it, photosynthesis stalls and leaves turn yellow between the veins — a classic magnesium deficiency symptom
Complete micronutrient profile — Goes far beyond a simple cal-mag supplement by delivering the full spectrum of ocean-derived trace minerals that support enzymatic reactions, hormone production, and nutrient transport
Clean Epsom salt alternative — A superior, longer-lasting natural alternative to Epsom salt that won't disrupt soil biology or create nutrient lockout
Deficiency prevention — Proactive application prevents the micronutrient gaps that cause yellowing leaves, blossom drop, and poor fruit quality

How to Use

Mix 2–4 tablespoons per gallon of water and apply as a soil drench or foliar spray every 1–2 weeks. Vitamin Sea is especially important during heavy flowering when micronutrient demand spikes. Use alongside Bloom and Incredible Bulk for complete flowering nutrition, and always pair with Growganica Microbes to ensure maximum mineral uptake. See our feeding schedule for timing guidance.

The Missing Piece in Your Garden

Most fertilizers focus on NPK — nitrogen, phosphorus, and potassium. But your plants need dozens of micronutrients to truly thrive. Vitamin Sea fills this gap — essential for demanding crops like tomatoes and strawberries — with a clean, ocean-sourced micronutrient fertilizer that complements every product in the Growganica lineup. Pair with Kelp It Real for a potassium + micronutrient stack, or add King Krustacean for calcium + magnesium coverage.

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Available in 1 Quart, 1 Gallon, 2.5 Gallon, and 5 Gallon sizes.