How to use Canna Boost to grow better weed plants

Canna Boost  is a flowering supplement for marijuana that claims to boost overall bud size weight and potency. We’ve had good results with it. We’ll show you how to use Canna Boost to maximize the quality and quantity of your indoor weed plants.

Canna Boost is used across the entire line of Canna supplements for growing weed. Pot growers using coco coir will run the Canna Coco line of nutrients, which commonly consist of Canna A and Canna B, Cannazym (beneficial enzymes), Canna Rhizotonic (root stimulant), Canna PK 13/14 (Phosphorus and Potassium used during flowering), and good old CannaBoost.

Canna Boost is used for all waterings in the flowering cycle per the Canna site’s instructions. Or you can wait until the flowers start to form about 2 weeks after flipping to 12-12 lighting to induce flowering.  Canna Boost is much more expensive than the other nutrients in the Canna Coco line, in many growers wonder if buying CannaBoost is worth it?

Canna Boost review: is Canna Boost worth the money?

Our experience with Canna Boost has been very positive. The buds look frosty and have a deep earthy smell and taste compared to clones of the same strain grown with different products.

But Boost is expensive. So the big question of any Canna Boost review: is it worth it?

Typically the price I’ve seen across Hydro shops is about $85 for 1 L of Canna Boost (it’s a bit cheaper on Amazon). The dosage for a Canna Boost is 40 mL per 5 gallons of water. So for each 5 gallon bucket you fill up, you will use approximately $3.40, assuming the cost is 8.5 cents per milliliter.

It’s considerably more expensive if you buy the 250 ml bottle of Boost ($35).  Your best value bet is the Boost 5 liter bottle, but it’s a big investment at $280+.

Is Canna Boost worth the money? We’ve had very good results. Nice crystally results. Powder-white trichome blanket results (even on much of the fan leaves). So we’re going to keep using it for marijuana grows, despite the cost.

Canna Boost dosage: how much should be used?

According to Canna’s instructions, Boost dosage should be u 40-80ml per each 5 gallon bucket of water. Doubling the dosage is your call, but you’ll spend twice as much – so I don’t do it.

For Canna Boost however I run this at the recommended 40 ml per each 5 gallons of water. The recommendation of 38ml per 5 gallons that appears on the Canna Coco “light” feeding schedule.

I have always used Boost during my Coco Coir grows. Each time the buds have been very  sticky with a nice thick white layer of trichomes. At this point I wouldn’t consider not using Boost, unless I absolutely couldn’t afford it.

While my anecdotal evidence has been the CannaBoost works very well to facilitate but growth and development, it is by no means a scientific way of making this determination.

A proper experiment using several controlled plants not using Boost, several using half strength, and several others using it full strength would be a great way to tell the exact effects of Boost on flowering weed. But there’s no way I would bother risking having a couple crappy plants during a run because I wanted to cheap out on three dollars of the boost for each watering. If you’ve tried such an experiment on the same strain we’d love to hear how it worked out, please let us know.

Or if you’ve tried doubling boost on a plant to compare it to regular strength doses. I’ll have to remember to try that, short-term memory loss be damned.

Caana Boost is used during the flowering stage of marijuana growth in order to improve the quality of your buds
Caana Boost is used during the flowering stage of marijuana growth in order to improve the quality of your buds.

What is Canna Boost?

According to the Canna website, Canna Boost is “a liquid metabolism elicitor with high energy content, and without any added plant growth regulators.”

By speeding up marijuana plants’ metabolism, you allow the plants to increase their nutrient uptake. Some of Boost’s active ingredients are carbohydrates that are by-products derived from the production of bio ethanol and yeast, and through the fermentation of molasses (from sugar cane, sugar beet, and palm).

The resulting saccharides are fermented to remove simple sugars. The resulting product is CannaBoost, a thick blend of saccharides, proteins, amino acids, and other compounds.  The process takes a long time and is very involved according to the Canna site, involving many steps and the introduction of specific microorganisms, which in turn contributes to the expensive price tag.

Alongside a balanced nutrient schedule, a flowering booster optimizes the plant’s feeding process and allows the plant to grow to it’s full potential.

Is molasses a substitute for Canna Boost?

Manny growers use molasses as an additive when watering weed during the flower cycle. Molasses is the byproduct of sugar production, and contains many carbohydrates that are very beneficial for marijuana bud development during flowering.

Canna Boost does look somewhat similar to molasses, although much less thick. But the dark syrupy appearance  invites the question on whether molasses can be used as a substitute for Boost.  Or can CannaBoost be used alongside molasses.

One thing to consider when asking the question of Canna Boost vs. molasses is that there are many other things in Boost beyond what molasses can offer. At least the Canna site will tell you so. Molasses is much cheaper. I don’t like having to spend money on Boost, but I can’t justify switching to molasses and risking an inferior crop. So I’ll probably never find out in a pure a/b test scenario.

As a grower friend remarked when I asked if he ever used molasses to enhance flowering in cannabis, “that shit’s for old hippies.” So who knows.

When should Canna Boost be used?

Canna Boost should be used during the entire flowering cycle according to the directions Canna provides. Lately I’ve been waiting to use Boost until I see flower begin to form, about 2 weeks after I induce flowering by switching to 12-12 lighting.

When you flip the light cycle to 12 hours on to facilitate flowering, you should start adding Canna Boost to your water. Although it probably could wait until about 2 weeks in, when the first signs of flowers appear.

You should continue to use it even through the final week of your plants Flowering stage, when typically most growers will flush with plain water.  These enzymes only help to improve the taste and smell of the bud during the flower ripening process.

Should you use Canna Boost during the vegetative growth stage?

It is a complete waste of money to use Canna Boost during the vegetative period of growth of your marijuana plants.

Boost is meant to be used only during the flowering cycle, that is when it is beneficial to the plants. Using Canna Boost during vegetation is silly, you’re literally just pouring your money down the drain.

Can I use Canna Boost as a flowering booster alongside nutrients lines from other companies?

Well, the sales folks over at Canna certainly would appreciate users of other lines of nutrients used Boost for their grows.

Yes, Boost can be used with other lines of nutrients from other nutrient companies. You may want to make sure that you’re not using something similar that may potentially interact with it, but in general Boost is safe to use alongside all nutrient lines.


Canna Boost is an additive use during the flowering cycle of marijuana plants as part of the Canna line of nutrients. It allows buds to develop fuller and more potent with a sweeter taste .

Canna Boost is somewhat expensive at all over three dollars per 5 gallon of water, but the results that I have seen definitely justify this expense. The stickiness of my grows seems to be better than other growers’ results with the same strain, and it seems like Canna Boost is well worth the money in my experience.

How to use Canna Boost to grow better weed plants
Article Name
How to use Canna Boost to grow better weed plants
We'll show you how to use Canna Boost to maximize the quality and quantity of your indoor weed plants. Learn proper dosage for using Boost.
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Happy Pot Farmer
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