SKU: 23500156424
cal mag for pot plants

cal mag for pot plants GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron And Sulfur Supplement, Corrects Secondary Nutrient & Trace

Sale price$18.03 Regular price$20.03
Save 10%

Pay in installments of $5.01 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 22 - Sep 27

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

cal mag for pot plants GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Magnesium, Iron And Sulfur Supplement, Corrects Secondary Nutrient & TraceCal 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
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 23500156424

Discover Niche Categories That Outsell cal mag for pot plants

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 25 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
L. E. E. Family
Natrona Heights, US
★★★★★ 4
Doesn't really taste like bacon. I know becaused I chewed it. Great as a slower eating thingy.
Style: Dental Chew, Flavor Name: REAL Bacon, Size: Dental Medium
So my dog has this thing where she does not want to chew on anything that she is supposed to chew on unless it's a knuckle bone that she cannot be trusted with (because she bites off fragments of bone) or one of those flexible, edible nylabones for "gentle" chewers, which she will eat in a single sitting. If I want to get her to chew something that might actually withstand her for more than an hour, I have to pretend it's mine. It's a secret forbidden treat that I love very much and just "accidentally" left within her reach to steal and covet. So it's pretty much standard practice at this point that, when I get her a new chew toy, I gotta carry it around for a while, pretending to chew on it. I got this bone in the mail and did exactly that, but I noticed right off the bat that, for a bacon-flavored thing, it didn't smell like anything at all. It was just this plain sort of plastic scent. And that's how I ended up actually chewing on it instead of just miming it out because maybe the bacon flavor was under the initial layer? But no, it wasn't. It was just bacon-colored plastic. So if your dog is the type of chewer that will chew regardless of flavor, this should work out fine. If not, go for something else. My dog did not give a heck about this bone, even once the "this is actually mine but you cleverly stole it away" ritual was completed. After that, I tried putting it in her bowl with her food, thinking maybe the flavor of the food would rub off enough that she'd want to chew it. She didn't, but what did happen is the reason I'm giving this a positive review at all. While it fails utterly as a chew, it makes a really great impromptu "stop eating so fast, you tornado shaped like a dog" mechanism. We've bought actual slower eating bowls for her and never had any success, because she just gives up and cries if she can't get her face into the crevices. But when we put this in her regular round bowl and pour her wet food around it, she's able to nose the benebone around in the bowl as she eats her food, but it does slow her down considerably. She's way less farty and whiny after food time, which anyone who has experienced how specifically racid dog farts can be will know is a blessing. So, thanks, Benebone. For us, your product is worthless as a chew, but invaluable as a makeshift slower eating thingy. Edit: Benebone got in contact with me about my review and offered to refund my purchase and send me some different products to try. I declined the refund, because I do find the bone I bought useful for the above-described purpose of slowing my dog down when she eats. But I did accept the samples. She's still pretty unimpressed with them, and I will probably end up passing them along to other dog-havers I know, but I myself am pretty impressed with Benebone's customer service and so have changed my review from 3 stars to 4. It was "suggested" that I mention that other dogs will probably be more satisfied with Benebone's flavors if they are not as picky as my dog is, and that sampling a Benebone yourself is maybe not the most reliable way to test its tastiness, when dogs have much more sensitive noses/tongues than humans. Which is certainly true! But I don't think my dog is a complete alien for wanting something with slightly more discernible flavor and scent. And I do think some of the advertising for Benebone implies more of that than you actually get in the finished product. So I'm gonna have to double down on my previous assessment that, if your dog likes to chew for the sake of chewing, Benebone will probably really appeal to them. But if they're a more food-motivated chewer, you're better off with fully-edible chews like rawhide or bully sticks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2018
J
Verified Purchase
JR
Port Orchard, US
★★★★★ 5
My Dog’s Favorite – Durable & Keeps Them Busy
Style: Fishbone, Flavor Name: REAL Jack Salmon, Size: Small
This is my dog’s favorite chew by far. I used to go through chew toys constantly and could easily be replacing them every week, but this one actually holds up. It keeps my dog engaged and gives me peace of mind knowing it’s something they enjoy and I can trust in terms of durability. If you have a dog that goes through toys quickly, this is definitely worth trying.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
J
Verified Purchase
Josh K.
Fort Morgan, US
★★★★★ 5
My Pitbull absolutely loves the bacon flavor.
Style: Stick, Flavor Name: REAL Bacon, Size: Medium
This is officially my dog’s new favorite toy. She plays and chews on this thing nonstop. She has dozens of toys and she doesn’t touch any of them unless, she forgets where she left her bacon stick. This is a must for the perfect Dental Toy. I kinda suspected she’d love these things, so I also bought the knob in chicken flavor. She likes the chicken but, it’s so obvious she loves the bacon flavor. Smart girl. I absolutely love bacon also, bacon is perfect by itself, and it makes everything else much better. Except a bacon martini, so disgusting. The main reason I bought two was to put one in my vehicle, for road trips. My dog is my child, my Princess, so she goes almost everywhere with me. I knew this would be great for keeping her entertained and distracted while we’re out running errands and stuff. I always keep separate toys in the cars for her to chew on. A few years ago I forgot to grab a few toys out of the bin and she decided that boredom was a good excuse to chew on a seatbelt, no cool. Ever since then I decided to have dedicated toys that stay in the vehicles, so I’ll never forget again. The toys she loves the most are the ones I buy multiples of. One for the house and one for each vehicle. For me it’s simpler. I did notice at first, her gums did bleed a tiny bit. She’s a Pitbull, very aggressive chewer but, only with certain toys. This is definitely one of those toys. The bleeding stopped after a few days and things are back to normal. This is truly a unique product. I call it a toy but it has many positive perks. It’s her favorite. She plays with it all the time. Any time I need to distract her for something I grab the Benebone and show it to her, she immediately gets excited and self soothes. I feel like dental hygiene is the biggest bonus of all though. I’d say 80% of her toys have dental hygiene in mind, that’s very important to me, along with not having bad breath. She see’s a flavored toy, and I see her getting dental praises at every vet visit. All parties are extremely happy. This toy is also extremely durable. With that said, I knew she wouldn’t be able to chew through it overnight, or even in a week. It’s tough finding toys that she won’t chew through overnight. This product is lasting her a long while. It’s not always about the price. To me, a toy lasting more than a few months is more important than the money spent. Based on the video ad I saw online I knew it’d be a durable product, plus I love supporting happy families that bring something different, and unique to market. Happy family equals happy products. Once it arrived and I could feel the material and texture in my hands I knew for sure “no way she’s gonna chew through this fast, or maybe not at all”. Even though it really is lasting for a long time, I still feel like she’s chewing through it faster than other dogs. That’s just my particular dog. I had a tough time picking the right size for my dog. My Pitbull is small, about 35lbs. But man does she chew in the 100lbs + size range. I really wanted the biggest size for her but, I thought I don’t want it so big she won’t be able to even chew on it, or even just getting her jaws around it. So I went with ONE SIZE ABOVE the size/weight chart that is provided in the description, and it turned out to be perfect for her. It’s small enough she can chew and have fun. It’s too big for her to bite chunks off. In the past she’s bitten chunks off all her small toys. I put both the chicken and bacon in front of her to see which one she’d grab first. Of course it was the bacon. Then it took them both and put them in her toy bin to see which she’d grab. Again the bacon right away. I love bacon too, great choice thinking like me. So I the bacon flavor stays in the house, and the chicken I put in my car for road trips. The noises my dog makes while chewing and playing with this thing drives my wife nuts. It doesn’t bother me at all, not even a little. Thanks to multiple tours to Iraq, I can completely ignore petty noises and sounds. My wife on the other hand, will tell her to play in a different room. She listens and goes into a different room. That applies to both us for all of our dog’s toys, not just this one. To be honest these Benebones do have kind of a hard texturized plastic feel to them, so yes it does make a tiny bit of noise when she’s playing and chewing. I can almost promise and guarantee that any every dog will love the Benebone in any of the shapes, sizes, and flavors. It really is the perfect toy for a dog. Especially for aggressive chewers like my Pitbull, Princess Polly. She keeps her favorite toys in her bed. This Benebone has a spot beside her big squeaky tennis ball, rubber tug-a-war, and her deer antler. I haven’t even seen her touch the other toys since I bought the Benebone. I am extremely happy with my purchase and will for sure be buying more forever. I recommend buying multiple for inside your home and for each vehicle. You will not be disappointed, unless you buy one and your dog looses it and forgets where they hid it for later.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2021
E
Verified Purchase
Eduardo
Alexandria, US
★★★★★ 5
Great for heavy chewers
Style: Tripe, Flavor Name: REAL Beef, Size: Large 1-Pack
It lasts a long time. I have heavy chewers. And this is going strong for months now. It’s their new go to toy. I have americanbulldogs Scott type. 88lbs female and over 100lbs male.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
K
Verified Purchase
Kelly
Massapequa, US
★★★★★ 5
Great
Flavor Name: Bacon & Chicken, Size: X-Large
My dogs love to chew these and they are long lasting
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

recommand products