How to Use Fox Farms Nutrients – Guide

Using the correct nutrients can help improve your plant’s overall health and yield, so proper mixing is important. As a grower, you need to choose the appropriate nutrient solution for your plants depending on their growth stage.

Nowadays, various mixes fit your soil’s needs, both liquid and soil-based. If you are searching for a fertilizer that helps you achieve higher yields, Fox Farm might help you achieve that.

Fox Farm is a brand of nutrients and fertilizers designed explicitly for hydroponic and soil-based systems.

In this article, we’ll explain the benefits and create how to use Fox Farm’s nutrients!

Fox Farm Trio Nutrients

Fox Farm nutrients are great for the soil and hydroponic growing of plants. They’ve been a favorite among growers since the mid-80s. Fox Farm nutrients can utilize both flowering and vegetative states of growing plants. Aside from the adequate amount of nutrients to keep your plant healthy, they offer various formulas for specific use.

However, the most popular Fox Farm products are the trio formula of Big Bloom, Grow Big and Tiger Bloom.

Big Bloom

Fox Farm Big Bloom is formulated to use during the blooming stage of your crop. It is perfect for growing plants and provides your crops with adequate nutrients. It consists of bat guano, worm castings and other natural elements and has a nutrient ratio of 0:5:7 NPK.

The formula will also enhance the flavor of the buds or encourage bigger and fatter buds. You can apply it through drip irrigation, foliar spray, a hydroponic system or on a watering can. It is also great for sick plants and is a natural, biologically alive formula.

Grow Big

Fox Farm Grow Big is an organic concentrate that consists of minor, micro and significant nutrients. It is mild enough and cannot affect the pH balance of your water, but it is adequate to give your plant optimum nutrients. It has 6% nitrogen, 4% phosphorus and 4% potassium. It is used in the vegetative stage in the second or third week.

Also, you can use it for three weeks at the beginning of the flowering stage.

Tiger Bloom

Fox Farm Tiger Bloom has high phosphorus that is extra powerful and fast-acting in fertilizing. It also has enough nitrogen and numerous minerals for vigorous growth. It is perfect for producing blooms and numerous buds and has low pH to preserve micro-nutrients.

Nitrogen encourages robustness and growth and is applicable both hydroponic and in soil. It has a 2:8:4 NPK nutrient ratio.

How to Use Fox Farm Trio Nutrients – Guide

The Fox Farm trio nutrients have different applications for better plant growth. Here are the ways how to use or apply them according to their formulation:

How to Use Grow Big

When your plant begins to sprout or after transplanting, you can start feeding them after two weeks. Give your plant a jump start with a foliar feeding application. Once your plants reach their vegetative growth peak and show the first signs of flowering, you can switch to Fox Farms’ blooming fertilizer.

General Feeding

  • Use 2-3 teaspoons (10-15mL) per gallon (4 L) of water in every other watering.

Heavy Feeding

  • Use four teaspoons (20 mL) per gallon (4 L) of water in every other watering.

Foliar Feeding

  • Use ½ teaspoon (2.5 mL) per gallon (4 L).
  • Use a pump sprayer and spray both sides of the leaves.
  • Make sure your plant is not in sunny areas during fertilizer application.

Hose End Sprayer

  • Fill the sprayer with the concentrate, and do not dilute it.
  • Ensure to follow the manufacturer’s instructions for proper application.

Apply both sides of the leaves using a pump sprayer for more accessible application.

How to Use Big Bloom

For adequate nutrients for your plant, make sure to use Fox Farm Big Bloom, add it in a water container or to a non-clogging hose-end sprayer, siphon mixer or via drip irrigation. Constantly adjust your plant’s fertilization rate according to its response.

General Feeding

  • Use four tablespoons (60 mL) per gallon (4 L) of water in every other watering.

Heavy Feeding

  • Use ½ cup (120 mL) per gallon (4 L) of water once weekly.

Supplemental Foliar Feeding

  • Use one tablespoon (15 mL) per gallon (4 L) of water only once a week during the early stage of plant growth.
  • Don’t apply when your plant is directly hit by sunlight.

Seedlings and Transplanting

  • Use one tablespoon (15 mL) of water per gallon (4L) in every other watering.

How to Use Tiger Bloom

In using Tiger bloom, you have to raise the pH levels between 5.8 and 6.3 to optimize nutrient accessibility. Try to adjust the pH as needed. For hydroponic system usage, use a ppm (parts per million) or a conductivity meter to observe quality and to control the nutrient’s strength.

General Feeding

  • Use 2-3 teaspoons (10-15 mL) per gallon (4L) of water in every other watering.

Heavy Feeding

  • Use four teaspoons (20 mL) per gallon (4 L) of water in every other watering.

Recirculating System

  • Use two teaspoons (10 mL) per gallon (4 L) of water in every reservoir change.
  • Use three teaspoons (15 mL) for heavy feeding.

Supplemental Foliar Feeding

  • Use ½ teaspoon (2.5 mL) per gallon (4 L) of water every other week.
  • Do not apply with direct sunlight or when the sun’s heat is high.

Trio Application Following Fox Farm Table Guide

Most growers used Fox Farm Trio by following the manufacturer’s table instructions to give your plant adequate nutrients. Please click the table guide, Fox Farm Feeding Schedule, created for a better understanding of the application of the three formulas.

As stated in the table, you can start using Big Bloom during seedlings or cuttings with six teaspoons per gallon of water. While the Grow Big will begin within two weeks with two teaspoons. Then, Tiger Bloom will be applied on the 5th week with two teaspoons per gallon of water.

On the other hand, you stop feeding your plant with Grow Big for ten weeks and continue the Tiger Bloom instead. It is the stage where your plant is already on its vegetative growth peaks. At the same time, Tiger Bloom will be applied until you start harvesting. The measurements will vary depending on the week’s applications, so follow the instructions carefully.

There are other latest features formulas of Fox Farm that you can apply along with the Trio. These are Flower Kiss, Boomerang, Kangaroots, Wholly Mackerel, Kelp Me Kelp You, Bembe, Open Sesame, Beastie Bloomz and Cha-Ching. Applying all of these aside from the Trio will make your plant even healthier, but it isn’t cost-effective.

Using Fox Farm Trio will be enough for your plant to have adequate nutrients, while the rest are just optional as many growers have already tried them.


Using Fox Farms nutrients can effectively provide the necessary nutrition for your plants to grow and thrive. It is important to follow the manufacturer’s guide on the packaging and mix the appropriate amounts with water. Then, start with lower concentrations and gradually increase as needed depending on the instructions label.

Closely monitor the pH of the nutrient solution and adjust it as needed. Lastly, use a combination of Fox Farm Trio products to provide balanced nutrients to your plant.

Following these guidelines ensures that your plants receive the optimal nutrition for healthy growth. Did you find the guide helpful so far?

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