






🌱 Unlock your garden’s full potential with FoxFarm Cal-Mag — because thriving plants don’t wait!
FoxFarm BushDoctor Cal-Mag is a premium liquid supplement delivering 3% calcium and 0.9% magnesium in a 1-0-0 NPK formula. Designed to prevent common plant deficiencies like tip burn and blossom end rot, it strengthens cell walls and stems for healthier, more resilient fruit and vegetable plants. Easy to mix and apply, it works best within a pH range of 5.6 to 6.8, ensuring optimal nutrient uptake and vibrant growth throughout the season.










| ASIN | B08SJ5HVZZ |
| Best Sellers Rank | #3,120 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #123 in Garden Fertilizers |
| Brand Name | FoxFarm |
| Coverage | pint |
| Customer Reviews | 4.7 out of 5 stars 2,774 Reviews |
| Included Components | Application Instructions |
| Item Form | Liquid |
| Item Height | 9.5 inches |
| Item Type Name | Cal-Mag |
| Item Weight | 1 Pounds |
| Liquid Volume | 1 Quarts |
| Manufacturer | FoxFarm |
| Mixing Ratio | 1-2 tsp per 1 gal |
| Model Number | FX17020 |
| Specific Uses For Product | Gardening |
| Target Species | Vegetables, Fruit-bearing plants |
| UPC | 752289520082 |
| Unit Count | 32.0 Fluid Ounces |
M**.
WONDERFUL!
Amazing, that's all I can say. One of my "plants" had randomly browning leaves - I disproved all possible causes, no bugs, no pests, not over or under watering - PH was on the money. All the others got exactly the same treatment, this was the only one with this symptom. I ordered Fox Farm's Cal Mag (as I am using the Fox Farm trio plus Fox Farm soil exclusively) plucked off all the brown leaves. When the order arrived, I mixed it as per instructions, I fed that plant and all others that had yet to flower. Only 3 brown leaves the next day, but the following day, none. Not only that but all the others grew several inches overnight and show signs of flowering. This stuff is GREAT!
R**Z
This stuff works
I recently started using Fox Farm Bush Doctor Cal-Mag Liquid, and it has quickly become an essential part of my plant care routine. This supplement, packed with calcium and magnesium, has made a remarkable difference in the health and vitality of my plants. From the very first application, I noticed my plants responding positively. The leaves became more vibrant and lush, and new growth appeared stronger and healthier. One of the things I appreciate most is how easy it is to mix and apply. The liquid blends smoothly with my usual nutrient solution, and it doesn’t cause any clogging or residue. I also love the peace of mind knowing that I’m giving my plants an extra boost of calcium and magnesium to support everything from strong cell walls to robust flowering. Whether you’re growing houseplants, vegetables, or flowering ornamentals, Fox Farm Bush Doctor Cal-Mag Liquid is a product I highly recommend. It’s reliable, effective, and a great way to keep your plants thriving all season long.
S**K
For plants
Works wonders for my plants
B**N
Good cal mag even better price
Just used it again tonight I have had it maybe three weeks now and man does it work.. my plants just started producing huge flowers this is a high quality fertilizer for all plants very easy to use with clear instructions and u get a big bottle for a very good price when it comes to cal mag this is the only one I will buy indoors or outside it doesn’t matter this fertilizer makes plants grow big and fast
A**R
Great product
Great product if using RO water on your plants
B**N
Highly recommended!
This really boosted my flower garden this past spring. I love that it came sealed and packaged in a bag Incase it leaked. It wasn't leaking so that was a plus. I will buy again.
L**A
Good stuff
Came super fast and highly recommended!! Fox farms has amazing products
C**1
A+++
Works great
Trustpilot
1 month ago
1 week ago