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HumboldtsSecretSupplies

Humboldts Secret CalMag & Iron | Calcium, Magnesium & Chelated Iron Nutrient Fertilizer | Hydroponic Supplies for Vegetative & Flowering Growth in Soil, Coco, Hydroponics or RO Water | 1 Gallon

Humboldts Secret CalMag & Iron | Calcium, Magnesium & Chelated Iron Nutrient Fertilizer | Hydroponic Supplies for Vegetative & Flowering Growth in Soil, Coco, Hydroponics or RO Water | 1 Gallon

Regular price $68.75 USD
Regular price Sale price $68.75 USD
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About This

  • Packaging Update: You may receive previous or updated packaging during our transition. Same formula, same performance. Strength for Every Stage - Humboldts Secret supplement with cal mag for plants delivers calcium, magnesium, and chelated iron to prevent deficiencies. It fortifies stems, improves leaf color, and supports flowering and fruiting plants for vigorous, healthy growth in any type of garden.
  • Fast-Acting Plant Recovery: Our balanced formula with calmag and chelated iron targets issues caused by nutrient imbalances, helping plants recover quickly. It boosts photosynthesis, nutrient transport, and root strength in vegetables, flowers, and herbs grown indoors or outdoors.
  • Maximum Absorption Power: Using our cal-mag for plants blend with added iron improves uptake efficiency, ensuring these essential minerals are fully utilized. It supports lush vegetative growth and abundant blooms, delivering consistent results for home or commercial growers.
  • Reliable Across All Setups: Humboldts Secret cal mag fertilizer with iron works in hydroponics, soil, and container gardens. It strengthens plant structure, enhances fruit quality, and ensures balanced nutrition in indoor and outdoor systems for dependable, healthy harvests.
  • Focused on Fruiting Success: Our formula with calcium and magnesium for plants plus chelated iron benefits crops in coco coir or reverse osmosis water. It helps prevent blossom end rot, promotes firm fruit set, and improves nutrient absorption for strong, productive plants in challenging conditions.

Overview

  • Brand : Humboldts Secret
  • Item Form : Liquid
  • Liquid Volume : 128 Fluid Ounces
  • Specific Uses For Product : Hydroponic
  • Global Trade Identification Number : 00648260730406
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What Our Customers Say

Perfect for my apartment!

These compact planters are exactly what I needed for my small balcony. The herbs are thriving and I love having fresh basil at my fingertips!

Great starter kit

As a beginner gardener, this kit made it so easy to start growing my own vegetables indoors. The instructions were clear and everything I needed was included.

Love the design

Not only functional but beautiful too! The minimalist design fits perfectly with my modern apartment decor. My succulents look amazing in these pots.

Space-saving solution

The vertical garden system is genius! I can grow so many plants without taking up floor space. Perfect for city living and my plants are healthier than ever.

Every small space holds the potential for a little green sanctuary

Frequently Asked Questions

Everything you need to know about growing a beautiful garden

The best time to plant vegetables depends on your climate zone. Generally, cool-season crops like lettuce and peas thrive in early spring, while warm-season crops like tomatoes and peppers should be planted after the last frost date.
Most gardens need about 1 inch of water per week, either from rainfall or irrigation. Water deeply but less frequently to encourage strong root growth. Early morning is the best time to water to minimize evaporation and disease.
Loamy soil with good drainage is ideal for most plants. It should be rich in organic matter, have a pH between 6.0-7.0, and retain moisture while allowing excess water to drain. Adding compost annually improves soil structure and fertility.
Companion planting, crop rotation, and encouraging beneficial insects are effective natural pest control methods. Marigolds deter many pests, while ladybugs and lacewings eat aphids. Regular inspection and hand-picking larger pests also helps.