GS Plant Foods
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GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
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GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0
Item #: 46618449

GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace

86% of respondents would recommend this to a friend

Item #: 46618449

SLE 935

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What Stands Out

Complete Nutrient Boost
GS Plant Foods Cal-Mag Extreme provides essential calcium, magnesium, iron, and sulfur, correcting nutrient deficiencies for healthier plant growth and enhanced yields.
Liquid Formulation
The convenient liquid formula allows for easy application, ensuring better absorption and immediate availability of nutrients compared to traditional granular fertilizers.
Specialized N-P-K Ratio
With a unique N-P-K of 2-0-0, this product specifically targets secondary nutrient needs, making it ideal for plants requiring additional calcium and magnesium support.

Product Details

Shop GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0 online at a best price in Sierra Leone. B09MDN25YT
  • Water soluble powder that makes 420 gallons of nutrient solution per container
  • Contains Calcium 13%, Sulfur 4%, and Magnesium 3%
  • Suitable for all growth cycles, easily mixes with water for irrigation or foliar spray
  • Formulated for use in all soil, container, coco, and hydro growing
  • Mixed at ¼ teaspoon per gallon of water for application to plants through all growth cycles
  • Guaranteed Analysis Total Nitrogen 11.0%, Nitrate N 11.0%, Calcium 13.0%, Sulfur 4.0%, Magnesium 3.0%
Brand NameGS Plant Foods
Model NumberMMextGal
ManufacturerGS Plant Foods
Number of Items1
UPC853656005628
Unit Count128 Fluid Ounces
Part NumberMMextGal
Item FormLiquid
Application Methodfoliar spray
CoverageFull
Target Speciesplants
Item Weight9 pounds (4.08 kg)
Liquid Volume1 gallons
Mixing Ratio1 teaspoon per gallon of water
BrandGS Plant Foods

Who Should Buy?

Suitable For
  • Indoor Gardeners

    Ideal for indoor plant enthusiasts needing to correct nutrient deficiencies in houseplants and improve overall plant health.

  • Vegetable Farmers

    Beneficial for vegetable growers seeking to enrich soil with essential secondary nutrients like calcium and magnesium.

  • Organic Gardeners

    Perfect for organic gardening due to its natural components, helping to enhance soil quality and plant growth.

Not Suitable For
  • Flower-Focused Gardens

    May not be suitable for flower gardens requiring specific N-P-K ratios to promote flowering and blooming.

Product Description

Dietary Supplement Disclaimer

Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition.


Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is GS Plant Foods Cal-Mag 420 Dry Super Concentrate used for?

    Answer: GS Plant Foods Cal-Mag 420 Dry Super Concentrate is a highly effective calcium and magnesium fertilizer designed to support plant health and nutrient absorption. Calcium is crucial for cell wall structure and nutrient transport, while magnesium plays a vital role in photosynthesis and enzyme activation. This product can benefit a wide variety of plants, including fruits, vegetables, and ornamentals, ensuring that they have essential nutrients for optimal growth.
  • Question: How do I use GS Plant Foods Cal-Mag 420 Dry Super Concentrate?

    Answer: To use GS Plant Foods Cal-Mag 420 Dry Super Concentrate, mix the specified amount with water to create a nutrient solution that makes up to 420 gallons. For best results, apply this solution at the base of your plants during the growing season or when signs of deficiencies appear. Regular use can significantly enhance nutrient uptake and improve overall plant vigor, especially for crops susceptible to calcium and magnesium deficiencies.
  • Question: Where can I buy GS Plant Foods Cal-Mag 420 Dry Super Concentrate?

    Answer: You can purchase GS Plant Foods Cal-Mag 420 Dry Super Concentrate from Ubuy in Sierra Leone. Ubuy is known for providing quality gardening and plant care products, ensuring that you receive authentic solutions for your gardening needs.
  • Question: Is GS Plant Foods Cal-Mag suitable for indoor plants?

    Answer: Yes, GS Plant Foods Cal-Mag 420 Dry Super Concentrate is suitable for both indoor and outdoor plants. Indoor plants often require additional nutrients due to the controlled environment they are grown in. This concentrate helps maintain balanced nutrient levels, leading to healthier foliage and improved growth. Regular application can be especially beneficial for houseplants that show signs of yellowing leaves or stunted growth.
  • Question: Can GS Plant Foods Cal-Mag help with specific plant deficiencies?

    Answer: Absolutely! GS Plant Foods Cal-Mag is formulated to address common calcium and magnesium deficiencies in plants. Symptoms such as blossom end rot in tomatoes or leaf curl in peppers indicate the need for extra calcium or magnesium. This fertilizer provides a concentrated solution that can help rectify these issues, promoting healthier plants and improving fruit quality.
  • Question: What type of plants benefit most from Cal-Mag fertilizers?

    Answer: Plants that require high amounts of calcium and magnesium, such as tomatoes, peppers, and leafy greens, benefit significantly from GS Plant Foods Cal-Mag 420 Dry Super Concentrate. These nutrients are essential for the development of strong cell walls and robust growth. Using Cal-Mag can prevent common deficiencies that hinder crop yields and overall plant health.
  • Question: How does Cal-Mag affect soil health?

    Answer: Applying GS Plant Foods Cal-Mag 420 can enhance soil health by improving nutrient balance and structure. Calcium aids in flocculating soil particles, which enhances aeration and drainage, while magnesium improves soil fertility by enhancing microbial activity. This leads to a more sustainable growing environment, allowing your plants to thrive and absorb nutrients efficiently.
  • Question: Is this product organic?

    Answer: GS Plant Foods Cal-Mag 420 Dry Super Concentrate is formulated using natural ingredients, making it suitable for organic gardening practices. While it effectively delivers essential nutrients, always check the label for specific certifications related to organic use. This product allows gardeners to nourish their plants while adhering to organic guidelines, promoting sustainable cultivation methods.
  • Question: Can I mix GS Plant Foods Cal-Mag with other fertilizers?

    Answer: Yes, GS Plant Foods Cal-Mag 420 Dry Super Concentrate can be mixed with other fertilizers, but care should be taken to avoid phytotoxic reactions. It's recommended to perform a small compatibility test before applying mixtures. This approach allows you to customize nutrient delivery based on the specific needs of your plants, maximizing growth and enhancing overall plant performance.
  • Question: What is the shelf life of GS Plant Foods Cal-Mag 420 Dry Super Concentrate?

    Answer: The shelf life of GS Plant Foods Cal-Mag 420 Dry Super Concentrate is generally quite long, provided it is stored in a cool, dry place. While specific shelf life can vary depending on storage conditions, proper handling ensures that the potency of the nutrients remains intact for prolonged use. Checking the packaging for any specific expiration information is also advisable to maintain optimal efficacy.

GS Plant Foods Fertilizers & Plant Food MMextGal Editorial Review

GS Plant Foods Cal-Mag Extreme Liquid 1 Quart Fertilizer with Calcium, Magnesium, Iron and Sulfur Supplement, Corrects Secondary Nutrient & Trace Element Deficiencies, N-P-K of 2-0-0 is an essential additive for any plant enthusiast. This liquid supplement provides crucial nutrients like calcium and magnesium that many standard fertilizers lack. Users report great success in preventing blossom rot in tomatoes and enhancing orchid blooming, making it an excellent choice for indoor gardening. The concentrated formula allows for a small amount to go a long way, aiding nutrient absorption in soil. Many customers recommend this product for its effectiveness in promoting healthy plant growth and supporting the blooming of various plants.

Customer Reviews & Ratings

434 customers ratings
  • 5 Star
    83%
  • 4 Star
    8%
  • 3 Star
    3%
  • 2 Star
    3%
  • 1 Star
    3%

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Pros

  • Helps prevent blossom rot in tomatoes
  • Great for enhancing orchid blooming success
  • Concentrated formula, a little goes a long way
  • Provides essential micronutrients often missing in fertilizers
  • Suitable for a variety of indoor and outdoor plants

Cons

  • Can turn into a gel-like substance if not mixed properly

Platform Trust & Buyer Confidence

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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SLE 935

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