Can You Water in Great White Mycorrhizae?

Mycorrhizae, the fungi that form symbiotic relationships with plants, is a hot commodity in the gardening world for its beneficial properties. The Great White brand offers one of the most powerful mycorrhizae formulas in the market, and their product is easy to use.

You can water in Great White mycorrhizae to allow the formula to penetrate the soil and enter the roots of your plants. Some users mix the product with their water system. Alternatively, you can soak cuttings, coat seeds, and top-dress your garden with mycorrhizae.

This article will show you how to use Great White mycorrhizae, what conditions to avoid when using it, and the benefits of using this powerful product.

How Do You Use Great White Mycorrhizae?

Great White mycorrhizae is a water-soluble product that helps young plants establish healthy and robust root systems. It’s convenient for first-time gardeners who want to increase their crop yields. 

To use Great White mycorrhizae, mix it with water and soak your plants in the solution. You can also use the product in your hydroponics, coat your seeds in the mycorrhizae, or dust the planting holes before sowing. 

Water Plants In Great White Mycorrhizae

Watering plants in Great White mycorrhizae is highly encouraged, as it helps the fungi enter and colonize your plants’ root systems. The beneficial relationship between the two organisms improves plant growth and health. 

Additionally, water activates Great White mycorrhizae so the fungi can start growing.

It is important to remember that mycorrhizae are fungi, which are living organisms and need water to survive. In dry conditions, the spores can remain dormant for several years. Additionally, ensure you water the soil before and after sprinkling in the mycorrhizae to encourage the spores to start growing.

Soak Your Cuttings in a Mycorrhizal Water Solution

Before dipping them in rooting hormone, soak them in mycorrhizal solution first. This method intensifies root growth, allowing your plants to grow healthy. You can learn more about using rooting hormones in my article about whether you can water plants with rooting hormones: Can You Water Plants With Rooting Hormone?

Use Great White Mycorrhizae in Your Hydroponics

If you’re using the Great White mycorrhizae in your hydroponics, you must dilute it significantly with water. By doing so, you can prevent stressing your plants or burning them accidentally. The “burn” may be caused by accidental intake of more nutrients than the plant needs. 

Apply Mycorrhizal Water Solution During Initial Root Growth

You can apply Great White mycorrhizae to support initial root growth or during the fruiting season. Mycorrhizae will help your plants absorb more nutrition for faster growth and better yield. If you choose this method, you must make a different solution and use it for about 2-3 weeks only.

Coat Seeds in Great White Mycorrhizae

You can use Great White mycorrhizae for seeds by rolling them around in the dry powder after they’ve sprouted. Whenever you water your seeds after planting, the mycorrhizae will dissolve into the water and colonize the new roots as they grow out of the seeds. 

Dust Plant Holes in Great White Mycorrhizae Powder

Dusting plant holes with mycorrhizae formula will encourage rapid and lush root growth in your plants. You can also mix a little powder with the potting soil or fertilizers to help new root growth whenever you feed your plants. A little goes a long way, so be careful about how much you pick up. 

Use Mycorrhizae as Top Dressing

Mycorrhizae should ideally not be used as top dressing as these fungi must enter the root system to be effective.

However, if you use the mycorrhizae as a top dressing, you must water it soon after. Apply the mycorrhizae under a layer of compost or other organic matter before watering it. This method is more effective as this allows the fungi to travel into the roots. 

Mycorrhizae are also at risk of being killed off if the temperatures rise too far in the summer, so they should ideally be added into the soil while planting or mixed in with a solution.

Use the Correct Amount Of Great White Mycorrhizae

When using Great White mycorrhizae, be careful to use the right amount of product. If you’re using the product in powder form, sprinkle the powder from a height to ensure even distribution through the roots. 

You can refer to the following table when making water solutions:

PurposeAmount of productAmount of water
Soaking0.5 tsp (2.84 grams)1 gallon (3.8 liters)
Hydro feed1 tsp (5.69 grams)10 gallons (38 liters)
Short-term growth support1 tsp (5.69 grams)2 gallons (7.6 liters) 

Great White mycorrhizae comes with a scoop that’s equal to 1 tsp (5.69 grams).

Conditions To Avoid When Using Great White Mycorrhizae

Great White is one of the most powerful mycorrhizae formulas available. Mycorrhizae can survive a long time because they’re spores, but their effectiveness decreases over time. 

Here are the following conditions that you should avoid when using Great White mycorrhizae:

  • High temperatures: Temperatures above 140°F (60°C) are dangerous for mycorrhizae. Due to temperature sensitivities, it’s best to mix the powder with your potting soil or apply it as a solution.
  • Fungicide usage: Only use fungicides that are applied to the seeds or the leaves of the plants. Avoid applying your Great White mycorrhizae for a month after using a fungicide so you don’t accidentally kill the fungi in the mycorrhizae. 
  • Composting processes: The fungi in mycorrhizae are sensitive to temperatures, as we’ve just discussed. They would not survive the temperatures in the composting process as they reach around 130-160°F (54-71°C). 
  • Presence of nitrogen and phosphorus fertilizers: Quick-release nitrogen and phosphorus fertilizers can interfere with mycorrhizae. While the fertilizers don’t hurt the fungi, they might prevent them from entering into symbiosis with your plants and make them ineffective. Slow-release fertilizers are ideal to use alongside mycorrhizae.

Benefits of Using Mycorrhizae

When used correctly, Great White mycorrhizae can improve plant growth. But how exactly do these mycorrhizae affect your garden? Here are some benefits of using mycorrhizae:

  • Allows you to reuse soil: Mycorrhizae are known for boosting nutrient-poor soils. By watering in mycorrhizae or mixing it with irrigation water, you’ll be able to reuse your potting soil and gardening mediums more often. Your fertilizer usage will also reduce if you use mycorrhizae like the one from Great White.
  • Healthier roots: Great White mycorrhizae penetrate the root system of your plants and enable the growth of lush root systems. Aside from supporting dense growth, the fungi prevent root rot by stopping pathogens from entering the root system. Mycorrhizae grow a thick barrier of mycelium around the roots that protects them. 
  • Quick turnaround: Mycorrhizae works fast. After applying Great White, you can expect to see improvement in one month or even less, depending on the concentration of your solution. Be careful not to use too much in your excitement, so you don’t burn your plants. 
  • Helps prevent transplant shock: Most people use their mycorrhizae when they’re rooting new plants or seeds. However, these fungi also help prevent transplant shock by supporting the root system and allowing it to draw in nutrients from the soil easily. 
  • Value for money: While Great White is one of the more expensive brands for mycorrhizae on the market, most people find it worth the expense. Most people also note that they only need a little, so the expense can be spread out over time. 

Plants That Don’t Respond to Mycorrhizae Use

Most plants form symbiotic relationships with mycorrhizae, and this relationship benefits the plants by letting them absorb more water and nutrients and be healthier. However, many plants simply don’t host mycorrhizae. 

You might not have much luck if you use mycorrhizae for the following plants:

  • Tuberous root plants, such as beets and sweet potatoes
  • Cruciferous plants, such as mustard, cabbage, and cauliflower

Final Thoughts

You should water in your Great White mycorrhizae if adding it to your soil, as the product is water-soluble and need water to activate.

You can also apply the mycorrhizae in a water-based solution in varying degrees of concentration, depending on how often you’re using it. Don’t use the fungi spores as top dressing without watering, or they might dry up and die in the sun’s heat.

Alexander Picot

Alexander Picot is the principal creator of, a website dedicated to gardening tips. Inspired by his mother’s love of gardening, Alex has a passion for taking care of plants and turning backyards into feel-good places and loves to share his experience with the rest of the world.

Recent Posts