Cannabis Plant Flushing Explained


Flushing Cannabis Plants- Alchimia Grow Shop

These solutions can be added to the water you flush your marijuana plants with in order to be extra effective in removing salts and minerals. If you have been feeding your plants a lot of nutrients during their regular growth, these might make for a good option to counterbalance that.

You will only need to make sure all of the water in the reservoir is replaced with p, H-neutral water that contains zero nutrients. Plus, flushing should only be done a few days before harvest in a hydroponics system (compared to several weeks in a soil grow medium). Faq about flushing your marijuana plants If you want your buds to become smoother and higher quality, then yes, flushing your marijuana plants is necessary for you.

Maintaining The Health Of Your Cannabis Grow – Weedmaps

Marijuana plant flushing

harvesting without flushing will make your plants store excess amounts of nutrients, salts, and other compounds and the end result will be bitter in taste The best time to flush your marijuana plants is approximately two weeks before you plan on harvesting. Thanks for reading and be sure to share your flushing experiences below! Robert.

One of the most controversial discussions in the Cannabis cultivation community is on the topic of “Flushing” the plants in the last two weeks of the flower cycle. To clean excess nutrients out of the plant tissues. To remove excess nutrients from the substrate with the intent of starving the roots so the plant will “consume” any remaining nutrients in its own tissues.

Plant Flushing: The Importance Of Flushing Your Plants Before …

So in case you’ve never studied exactly how you smell things you can check out the definition of Olfaction on Wikipedia. The short summary is that our sense of smell is literally just a physical mechanism for sensing the chemical makeup of what is in the air, or what we put in our mouth.

So it is the chemical composition of the material that CAUSES the taste and the smell. Now back to Flushing! In my efforts to research this topic, I managed to dig up this 2017 study by Jonathan Stemeroff that seems to have gotten quietly filed away in the bowels of the university library without ever making it into the news spotlight it deserves.

How Do You Prevent And Treat Nutrient Lockout In Cannabis?

I’m normally a skeptic, but after reading through this one, I can’t find any way to argue with the findings. Here’s a direct link to the study… Jonathan Stemeroff, University of Guelph The study analyzed the effects of flushing on THC and Terpene content, as well as on the mineral content in the resulting dried flower buds.

They repeated the experiment three times so in the actual study you will see three graphs like this one that is almost identical because each time they repeated the study, the results were the same. As you can see in the graph (copied directly from the study) each of the 6 different combinations of fertilizer and flushing showed only the tiniest differences which are well within the margin of error for a test like this.

Plant Flushing: The Importance Of Flushing Your Plants Before …

Can flushing actually create a better smelling or tasting bud? Looking at the chart above, and seeing that there is no difference in the chemical makeup of flushed vs non-flushed bud… and knowing that there can be no difference in the smell or the taste unless there is a difference in the chemical composition of the material, it seems impossible to argue the issue further.

some growers will still insist on flushing because they just know what they know. My experience trying to discuss this topic with “believers” is that I often hear comments like, “I’ve done this a million times and I just know that it works!” But of course, when I ask to see their test results….

Flushing Cannabis Plants- Alchimia Grow Shop

The term “Flushing” is actually used in two completely different ways, by two subgroups of growers who practice these techniques. In both groups, the only reason they have for doing this is… because some other grower told them to do it. This whole thing seems to be based on one simple premise – everyone else does it.

Then there are those few freaky sheep like me that stop and say, “guys, this seems really weird, why are we all doing this?” At which they shrug shoulders and look sheepishly back and forth at each other… not knowing why they do it, or even who started it all.

Flushing Cannabis – Myth Busted!

Soil and soilless blends have a cation exchange capacity that essentially binds nutrients to the substrate and releases them over time. So you can rinse a lot of nutrients out, but you won’t remove anywhere near 100% of the old nutrients in soil substrates. Then the question becomes, SHOULD you do that.

One theory is that starving the plant will cause it to consume all the “bad” chemicals and they will somehow magically disappear as the plant starves. In reality, this is being done right at the most critical time at the end of the flower when the plant needs to be pumping every scrap of stored resources into the production of flowers.

How Do You Prevent And Treat Nutrient Lockout In Cannabis?

You want your plant to have the chemical resources to create flowers, so yanking the food supply out when your plant is in the home stretch is probably not helpful, but since flower development is so far along already, you may be too late to hurt anything. One reader pointed out that you can save yourself some money by not fertilizing in the last two weeks – which could amount to quite a lot of money on a big farm, and for this reason alone, I would agree that it’s a good practice.

If there is excess nutrition in the substrate, it just sits there. The plant only takes what it needs. So if you have excess nutrition in your soil at the end of the season, it’s not like you’re shoving it down the plant’s throat. It’s more like you’re just making sure there is always a plate of food on the table.

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