Why you should be mixing Molasses with nutrients

mixing molasses with nutrients


Molasses And Cannabis

Molasses, also known as black treacle (yep, the sweet, sweet stuff!) is an extremely powerful, yet often overlooked additive when it comes to growing cannabis in soil, mixing molasses with nutrients can not only strengthen but boost the very foundations of your grow.

If you have made the choice to grow in soil, then you very well know that your soil is the very foundation of your cannabis plant, It’s full of nutrients and microorganisms that work together in a symbiotic relationship to keep your cannabis plants strong and healthy as they grow and flourish.

Whilst ensuring the nutritional balance of the soil it is correct, it is also important to maintain a suitable environment for the microorganisms within the soil to not only survive but to thrive.

What are the benefits of using Molasses?

Image result for living soil

If you’re used to growing in soil, you will have no doubt heard of the phrase “feed the soil, not the plant”.

Molasses are a rich source of nutrition extremely effective at feeding the organisms that live inside the soil and greatly improves the quality of the soil.

High in calcium, magnesium, iron, and potassium, as well as a host of other micronutrients, molasses are an excellent choice for any soil grower as it not only provides essential nutrients, it is also a great source of carbohydrates for the organisms that live in the soil.

In addition to this, Molasses are also effective at:

  • helping to prevent the buildup of pathogens that will potentially harm your plants.
  • reducing salt build-up that can cause certain nutrient lockouts.
  • Greatly improves the quality of the living soil


There is more than one way that you can begin incorporating molasses into your grow.

Molasses can be used as part of your regular feeding schedule, during soil preparation or both, the easiest and most common way to include molasses is in your watering schedule.

Begin by simply dissolving molasses in your regular nutrient feed and apply as you would usually feed your plants. When it comes to selecting a dose, you should start with 1-2 tablespoons per 5L (1Gal) of water.

It’s also good to note that using lukewarm water will make it much easier for the molasses to dissolve, use this initial dose as a starting point so that you can further assess how the molasses affect your soil and plants, adjusting the dosage of molasses accordingly.

By starting with a small dose you can help prevent unnecessary stress or risk of nutrient burn to your plants, especially during the vegetative stage. In most cases, the effects and benefits of the molasses will be mostly noticed during the later flowering stage although it is still good practice to use it throughout the entire life cycle.

As with adding any new additive, it’s important to keep an eye on the pH level of your soil.

What exactly is Molasses?

Molasses is the by-product of beaten sugarcane or sugar beets into sugar. The dark, viscous, sweet liquid is often used as a natural sweetener in baked goods, argiculture and often added to animal feeds.

Author: tgallone

3 thoughts on “Why you should be mixing Molasses with nutrients

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