SKU: 50910564063
pepper & herb fertilizer 11-11-40 plus micro nutrients

pepper & herb fertilizer 11-11-40 plus micro nutrients Cal-Mag Extreme – Advanced Calcium, Magnesium & Micronutrient Supp – GS Plant Foods

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Description

pepper & herb fertilizer 11-11-40 plus micro nutrients Cal-Mag Extreme – Advanced Calcium, Magnesium & Micronutrient Supp – GS Plant FoodsCal Mag Extreme GS Plant Foods Cal Mag Extreme Advanced Calcium, Magnesium & Micronutrient Supplement for Plants Strengthens Cell Walls, Prevents Deficiencies & Promotes Vigorous Growth For All Plants, Lawns & Gardens Correct Deficiencies. Strengthen Growth. Supercharge Results. GS Plant Foods Cal Mag Extreme delivers the critical secondary and micronutrients plants need for healthy, balanced growth. Formulated with highly available sources of Calcium

Cal-Mag Extreme

GS Plant Foods Cal-Mag Extreme – Advanced Calcium, Magnesium & Micronutrient Supplement for Plants – Strengthens Cell Walls, Prevents Deficiencies & Promotes Vigorous Growth – For All Plants, Lawns & Gardens

Correct Deficiencies. Strengthen Growth. Supercharge Results.

GS Plant Foods Cal-Mag Extreme delivers the critical secondary and micronutrients plants need for healthy, balanced growth. Formulated with highly available sources of Calcium and Magnesium, it also includes Sulfur, Iron, Manganese, Zinc, Boron, and Molybdenum to ensure complete nutritional support.

Calcium and magnesium are often overlooked—but they are essential for building strong cell walls, maintaining chlorophyll production, and supporting the transport of nutrients throughout the plant. Deficiencies in these elements can lead to weak stems, yellow leaves, blossom end rot, and reduced yield.

Cal-Mag Extreme prevents these problems before they start—keeping your plants strong, green, and highly productive.

 

💪 COMPLETE NUTRIENT SUPPORT: Cal-Mag Extreme provides essential Calcium (2.5%) and Magnesium (1.0%)—plus Sulfur, Iron, Manganese, Zinc, Boron, and Molybdenum—to correct deficiencies and maximize nutrient balance in your plants.

🌿 BUILDS STRONGER PLANTS: Calcium fortifies cell walls and prevents common issues like blossom end rot, while magnesium supports chlorophyll production for lush, dark-green foliage.

OPTIMIZES NUTRIENT UPTAKE: Enhances the absorption and mobility of nitrogen, phosphorus, and potassium—making your fertilizer more effective and reducing nutrient lockout.

🌸 BOOSTS GROWTH & FLOWERING: Strengthens roots, improves nutrient flow, and promotes more consistent flowering and fruiting across all plant types.

🌎 SAFE & EASY TO USE: 100% soluble and compatible with all fertilizers, hydroponic systems, and soil types. Non-toxic, environmentally safe, and suitable for all plants, indoors and outdoors.

What is Cal Mag 420 Dry?

GS Plant Foods Cal Mag 420 Dry Super Concentrate is our Dry, powdered version. Your all-in-one solution for robust plant health and unstoppable growth! This water-soluble powder delivers a powerhouse blend of calcium (13%), magnesium (3%), and sulfur (4%)—critical secondary nutrients that fortify cell walls, boost photosynthesis, and shield plants from disease. As an effective cal mag plant food for plants, it provides essential support for healthy development. With just ¼ teaspoon per gallon, one 18-ounce jar makes 420 gallons of nutrient-rich solution, perfect for soil, hydroponics, coco coir, and container gardens. 🌿

Key Benefits

💪 Stronger Plants: Natural cal mag for plants helps strengthen cell walls with calcium and boosts chlorophyll production with magnesium for lush, vibrant growth.

🛡️ Disease Defense: Cal mag fertilizer enhances natural resistance to pests, mold, and environmental stressors.

🌞 Optimized Photosynthesis: Sulfur ensures efficient nutrient mobility and energy conversion.

🌍 Universal Compatibility: Safe for all growth stages—seedling to bloom—and all growing mediums.

💧 Zero Waste: 100% water-soluble cal-mag for plants formula leaves no residue, ensuring full nutrient absorption.

Ingredient Breakdown

  • Calcium (13%): Builds robust cell structure and improves root-to-shoot nutrient flow when you add Cal-Mag for plants.

  • Magnesium (3%): Core component of chlorophyll for deeper greens and higher yields.

  • Sulfur (4%): Cal-Mag fertilizer supports enzyme production and amino acid synthesis.

  • Guaranteed Analysis: 11% nitrate nitrogen, pH-balanced for seamless integration with any regimen.

  • Derived From: Calcium nitrate and magnesium sulfate—pure, plant-ready nutrients.

What is Cal Mag 420 Dry?

GS Plant Foods Cal Mag 420 Dry Super Concentrate is our Dry, powdered version. Your all-in-one solution for robust plant health and unstoppable growth! This water-soluble powder delivers a powerhouse blend of calcium (13%), magnesium (3%), and sulfur (4%)—critical secondary nutrients that fortify cell walls, boost photosynthesis, and shield plants from disease. As an effective cal mag plant food for plants, it provides essential support for healthy development. With just ¼ teaspoon per gallon, one 18-ounce jar makes 420 gallons of nutrient-rich solution, perfect for soil, hydroponics, coco coir, and container gardens. 🌿

How to Use Cal-Mag Extreme

Simple Mix & Grow:

  1. Dilute: Stir ¼ teaspoon into 1 gallon of water (1 jar = 420 gallons!).

  2. Apply Weekly: Use as a root drench during irrigation for soil, coco, or hydroponic systems.

  3. Avoid Foliar Spray: Cal-mag fertilizer designed specifically for soil and root absorption only.

Pro Tip: Cal-Mag Extreme Liquid or Cal-Mag Dry 402 for plants pairs perfectly with primary nutrients for a complete feeding program!

Frequently Asked Questions:

Q: What is Cal-Mag Extreme?
A: balanced blend of Calcium, Magnesium, and essential micronutrients that strengthens plants, prevents deficiencies, and improves nutrient uptake. Safe and effective for all plants and growing systems.

_____________________________________________________________________________

Q: What makes Cal-Mag Extreme different from other Cal-Mag products?
A: Cal-Mag Extreme contains a complete suite of micronutrients (Fe, Mn, Zn, B, Mo) in addition to calcium and magnesium—ensuring balanced nutrition, faster uptake, and superior growth compared to basic two-element blends.


Q: How do I know if my plants need Cal-Mag?
A: If you see yellowing leaves, weak stems, blossom end rot, or poor fruit development, your plants are likely deficient in calcium or magnesium. Cal-Mag Extreme restores proper nutrient balance fast.


Q: Can I mix this with my fertilizer or kelp?
A: Absolutely. Cal-Mag Extreme is 100% compatible with all GS Plant Foods fertilizers, including Liquid Fish, Liquid Kelp, and Root Ruckus. It helps your plants make better use of those nutrients.


Q: Is this safe for edible crops and hydroponics?
A: Yes—Cal-Mag Extreme is completely soluble and safe for all growing environments, including hydroponic and aquaponic systems, greenhouses, and food crops.


Q: How often should I apply it?
A: Apply every 1–2 weeks during active growth, or whenever deficiencies are suspected. Regular use promotes steady, balanced nutrition and prevents future issues.

 

 

Applying a calcium-magnesium product can benefit various types of plants, especially those that require sufficient levels of these essential minerals for their growth and development. Calcium and magnesium are both important secondary nutrients for plants, playing vital roles in various physiological processes. Plants that can benefit from the application of a calcium-magnesium product include:

 

Tomatoes: Tomatoes require an adequate supply of calcium to prevent disorders like blossom end rot, which can affect fruit quality.

 

Peppers: Peppers benefit from balanced calcium and magnesium levels for proper fruit development and resistance to stress.

 

Cucumbers: Cucumbers also need sufficient calcium and magnesium to support healthy fruiting and prevent issues such as bitter-tasting cucumbers.

 

Leafy Greens: Plants like lettuce, spinach, kale, and other leafy greens benefit from calcium and magnesium for leaf development and overall plant vigor.

 

Broccoli and Cauliflower: These brassica vegetables can benefit from calcium and magnesium for healthy head formation and reduced susceptibility to diseases.

 

Beans: Both bush and pole beans benefit from adequate calcium and magnesium for proper pod development and overall plant growth.

 

Apples: Apple trees require calcium and magnesium for strong cell walls, which can improve fruit quality and storage ability.

 

Grapes: Grapes benefit from balanced calcium and magnesium levels for improved berry development and disease resistance.

 

Citrus Trees: Citrus trees need calcium and magnesium for healthy fruit formation and reduced susceptibility to nutrient deficiencies.

 

Potatoes: Potatoes can benefit from calcium and magnesium to prevent common issues like hollow heart and improve tuber quality.


Shipping Notes
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4.9 ★★★★★
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Ryne n.
West Palm Beach, US
★★★★★ 5
Perfect sunscreen
Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
I love the roll on sunscreen. It is quicker to apply and my little one can help without squeezing sunscreen everywhere. Will buy again.
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Reviewed in the United States on June 14, 2025
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Amazon Customer
Waukegan, US
★★★★★ 5
Roll on is so easy to use.
Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
Favorite brand and the roll on is so easy to use
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Reviewed in the United States on June 3, 2026
S
Verified Purchase
skippyp
New York, US
★★★★★ 3
Protection with days of white residue
Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
Mineral sunscreens have yet to master blending in and this is no different. If you're thinking of hitting the beach with your sexy bum protected it'd better be a ghost beach because you'll look like you've been dipped in white paint. Oh, and it doesn't wash off, so be prepared to look like Casper for days to come. It rolls on fine if you shake it well first and it does protect.
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Reviewed in the United States on June 8, 2025
M
Verified Purchase
Madden
Phoenix, US
★★★★★ 5
This has become my go to daily sunscreen
Size: 1.7 Ounce (Pack of 1)
After first purchasing a year ago, this has become my daily go-to facial sunscreen while others just sit taking up space in my medicine cabinet. I have sensitive skin and severe reactions to chemical sunscreen and have been searching for the perfect mineral sunscreen for several years after starting tretinoin made my reaction to chemical sunscreen intolerable. I only recently figured out I am also highly sensitive to chemical boosters found in a lot of mineral sunscreens. Especially Butyloctyl salicylate. That one is a no-go for me and until I learned about chemical boosters found in a lot of "100 % mineral" sunscreens, could not figure out why some of my sunscreens made my face flush red and feel like it was on fire when I was in the sun. Lab Muffin is my hero. My skin is dry, mature, and sensitive with some lines/wrinkes, large pores, and rosacea. At first I thought this Sun Bum tinted mineral would be too drying as it has a very light texture vs being creamy. But it is not and the texture makes for a light but effective formula. PROS: - Mineral formula with no chemical boosters. - Does not settle in pores and wrinkles. After applying it settles slightly in lines, but a quick blend with a blending brush and it is good for the day. - Blends easily into hairline and brows. - Does not sting my eyes when I sweat and seems relatively sweat proof. -Does not transfer tint to clothes once it dries down. Even when I wipe away sweat.... nothing seems to come off. It is the only tinted mineral I have tried with little to no tint transfer. - Blends easily with a very soft silky texture that allows you to blend without any tugging on the skin like a lot of mineral formulas. - Matte finish but with a subtle glow. - Tint provides light coverage to even out skin, though does not cover everything. As someone who rarely wears makeup I appreciate the subtle coverage which does not look overdone but helps my skin look better. - Does not emphasize occasional tretinoin dry patches. Some of my other sunscreens (even tinted) seem to make dry patches look worse. This formula covers them without emphasizing (or irritating) them. - Does not feel heavy on my skin. I can't stand feeling sunscreen on my face (or anything which is the main reason I do not wear much makeup) and this formula is so light once it is on I forget it is there. -Light coverage lasts all day if I don't sweat. Needs some reapplication when sweating. -Does seem to provide SPF 30 coverage. With reports about sunscreens underperforming lately, this one does appear to work. I can burn in less than 15-20 minutes in full sun, but no problems with this sunscreen when reapplied after sweating or long sun exposure (I work outdoors as a field biologist, so this one is huge. While I usually wear a hat, it does not cover everything as I cannot use a wide brim hat for my work.) CONS: - The tube. It is not awful, but I always seem to get a build up of product in the cap no matter what I do. This seems like a waste of product, but is really a minor complaint. - It does separate, but states clearly to shake before use. It seems to mix easily, so this is not really a con, just a warning to give it a good shake. - Would love an option for an SPF 50, but again, minor complaint. Overall, this is by far the best mineral facial sunscreen I have found so far for my particular skin and is used daily. The only reason I ever use anything else is to try to use them up. Other brands I have tried include: Undefined R&R sun serum SPF 50 ( a little too "glowy", emphasizes pores, and has niacinimide which I have to use with caution), Naked Sundays Collagen Glow mineral sunscreen SPF 50 (heavier and feel it on skin, but is my go-to when I must have SPF 50), CoTZ Flawless Complexion SPF 50 (feels heavy and not waterproof. Also even though I can'y find any chemical boosters in ingredients, something in this one makes my skin feel like it is on fire when in the sun), Cocokind daily SPF 32 (ok for a non tinted formula as not much whitecast, but does feel heavier than I would like), Murad City Skin Age Defense SPF 50 ( just too expensive), Koh Gen Do Watery Spa UV SPF 50 (my go-to non tinted formula these days though I still feel it on my skin and not waterproof and think it has been reformulated recently), Vanicream Facial Moisturizer SPF 30 (too thick and heavy), Hero Force Shield SPF 30 (was my favorite next to the Sun Bum until I realized the reaction in the sun was from the chemical booster Butyloctyl salicylate 😩), Agency SilkScreen SPF 50 (was ok, a bit too greasy and not much coverage, but went to back of pack as it has chemical boosters), Haruharu Wonder Black Rice Pure Mineral SPF 50 (I loved this formula and purchased several times before finally learning the reaction in the sun was from chemical boosters), Cetaphil Sunscreen Face Drops SPF 50 (quit using due to flaming face in sun as this one also has chemical boosters), and Etude Sunprise SPF 50 (only used ocassionally due to fragrance, but liked this formula until I clued into chemical boosters).
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Reviewed in the United States on November 15, 2025
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Verified Purchase
Maya
Alexandria, US
★★★★★ 5
Love love love!
Size: 1.7 Ounce (Pack of 1), Size: 1.7 Ounce (Pack of 1)
I’m a big hyram fan and after I found out dear clairs and other Korean chemical sunscreen might not be as effective as claimed, I bought this product off of his recommendation. I was a little nervous about a few things. For one I have the worlds Oiliest skin. I felt like dear klairs (my old sunscreen) did leave a bit of shine but it had controlled my oil better than any other sunscreen I tried... until now. This is the closest my skin has ever looked to “normal” as far as oiliness goes so props to that! I also was hesitant on this product because of the tint but also didn’t want a white cast. I would say I’m light to medium with an olive undertone and I think it matches my skin really well! It almost looks like I have makeup on bc my skin tone much more even , but it doesn’t cover breakouts. I happened to have a few pimples (already had them ,not caused by the sunscreen) so you can see that the sunscreen doesn’t cover them completely but blurs/evens out the clear part of my skin. There is a slight white cast but I think the tint offsets it. . I couldn’t speak for other skin tones but I think if you’re light to medium/olive it matches really really well. Finally I love the texture, it’s almost velvety and doesn’t pull on the skin which I hate in a face sunscreen. Not too thick not too watery, and just feels nice to apply. So I don’t really have anything bad to say about this product, but I’ve only had it two days so I’ll have to see if it causes any breakouts ect. But so far I would highly recommend! Update: I have been using this for well over a year now, and I can never go back to anything else! It doesn't cause breakouts even when I've slept with it on by accident. I use it instead of a primer under my foundation, and it works amazing. I literally have no complaints; I have not gotten a sunburn since I started using this. I just reapply every few hours when I'm at the beach/pool. I love reapplying because it controls my oil and gives that blurred bb cream effect, I'm also able to put it under my eyes/on my eyelids without burning my eyes. I was never someone who got compliments on my skin, but that changed when I started using this along with the rest of my skincare routine (Shoutout Hyram!) I'm so glad I found this product! 2024 Update! Still loving and using this sunscreen! I decided to try a couple of different brands earlier this year just because I hadn't ever branched out after finding this product, but this remains the best-tinted sunscreen for oil control and pore blurring I've ever tried!
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Reviewed in the United States on March 20, 2021

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