New Research Shows Flushing may not be needed (unflushed may even be better)

Doskiie said:

Talking about unabsorbed excess solution/salts remaining in the media to be specific, not directly extracted from within the plant.

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That’s not what the quote you shared said though or what your previous posts said, so please don’t back pedal now .

Removing minerals from the medium makes no difference either, it doesn’t remove anything from the plant.........

Doskiie said:

I was being a smartass about him being a scientist lol, not relating this quote to the person that made it being or not being a scientist. Was talking about why most flush before harvest aside from just taste/smell and how the plant burns.

The fact they proved there is no difference in content from a plant flushed vs one that isn't is more important then how the plant smells, tastes or burns is what I was getting at.

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"But when the data from the blind tests were analyzed, the researchers discovered that the participants tended to prefer the taste of the flower that had not been flushed at all, although overall, the duration of the flushing period had no impact on flavor, smoothness of smoke, or color of ash."

Sure sounds like they found a difference

If by "New Research" they mean they got a few grows behind them, yea, I can see it.

Doskiie said:

I was being a smartass about him being a scientist lol, not relating this quote to the person that made it being or not being a scientist. Was talking about why most flush before harvest aside from just taste/smell and how the plant burns.

The fact they proved there is no difference in content from a plant flushed vs one that isn't is more important then how the plant smells, tastes or burns is what I was getting at.

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The Only reason people flush before harvest is because a bunch of old hippies decided to embed the idea into their grow styles without any scientific data to support it. Then a few wrote grow books or “bibles” and got on the forums to spread their growing “skills”. Sadly in the end the science often gets ignored in favor of “well lots of other growers do it” or “I read it in a grow book or online so it has to be true”. Hell hightimes has printed plenty of articles strongly supporting flushing because the old heads that work there and write the articles(like Danny Danko) are still using old practices and can’t open their eyes to science and change.

Doskiie said:

That's exactly why I have been saying since I posted on this thread. Not my fault you interpreted it differently. You can't remove it from the plant, the plant uses up what it has stored, Flushing removes any excess from the media so the plant can't continue to uptake it. You can twist it around however you feel like.

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Lmao back pedal harder please. Unless you are over feeding your plant in the first place there is no reason to starve it to “prevent it from uptaking nutrients”. Otherwise you are just wasting water trying to cleanse the medium. I’m not twisting anything around just contradicting your incorrect assumptions about plant biology.

Doskiie said:

Sry I didn't know you were a degreed scientist. Please inform us on the facts.

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Doskiie said:

Taste and quality? You are still smoking chemical left in the plant if you are using synthetic nutes.* May not taste or burn different, but you are still smoking it.



I would flush to rid chemical so you don't smoke it, but it still has the same mineral amount either way, then what the hell is the point other then personal pref...

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Doskiie said:

“Flushing is important because it removes excess nutrients that are leftover within the plant,”

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Doskiie said:

Well I don't disagree that it's all a matter of opinion. Like I said. I would flush to remove as much excess nutes/salts from the media so the plant can use what it has stored, reducing what is left in the end product. I would still smoke it regardless if it was flushed or not, but would choose to flush to avoid having the nutes left in the plant, not because I want it to smell, taste or burn different. All a matter of opinion....

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Lol see you said it again, “To avoid having the nutes in the plant”.

You obviously don’t understand biology.

Back on topic.....

While the nutrient chemical won’t come out and highlight the point, It also says that there’s no real benefit to spending money and using nutes at all for the last two weeks. Might as well fade your nutes for the last two weeks and save some $$.

“ After harvest, the plants were cured and tested for final trimmed flower weight, terpene, and THC concentrations. Lab analysis found no significant differences between the different flushing treatments for flower yield, THC potency, or terpene content.”

Doesn't get that he doesn't get it lmao

I'd try and flush my vegetable garden next year....

dandyrandy said:

I'd try and flush my vegetable garden next year....

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I'm hoping not to flush mine. But we did just buy the river house, and it does flood. I do want to garden down there. So there is always the chance it will happen.

Thundercat said:

The Only reason people flush before harvest is because a bunch of old hippies decided to embed the idea into their grow styles without any scientific data to support it. Then a few wrote grow books or “bibles” and got on the forums to spread their growing “skills”. Sadly in the end the science often gets ignored in favor of “well lots of other growers do it” or “I read it in a grow book or online so it has to be true”. Hell hightimes has printed plenty of articles strongly supporting flushing because the old heads that work there and write the articles(like Danny Danko) are still using old practices and can’t open their eyes to science and change.

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The same broscientists demonized fems and condemned us to generations of stem rubbing chuckers.

dandyrandy said:

I'd try and flush my vegetable garden next year....

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carrots are easy to flush

Boatguy said:

What are these chemicals in nutes?

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https://extension.psu.edu/programs/nutrient-management/educational/soil-fertility/comparing-fertilizer-materials


plants consume cations and anions of nutrients, and turn them into sugars and carbohydrates, among many other interesting chemicals, and use them to feed, repair, produce and reproduce themselves. you cannot remove cations and anions once the plant absorbs them. they are no longer the original material you introduced into the medium, they've been broken down into their constituent parts, absorbed, and metabolized...
what is left behind in the soil are depleted salts, that are mostly inactive. they'll build up and start to burn your roots fairly quickly. you should be watering to run off in soil at least every third watering, every time in soilless medium...if you've been doing that, there should never be anything approaching a toxic level of depleted salts, so no reason to "flush".

Lol at new, lol at flushing...and hightimes..so much luagh i go now

So flushing isn’t necessary... but it doesn’t hurt the yield or the potency??so if it doesn’t hurt it just saves money.. right?

twalte said:

Back on topic.....

While the nutrient chemical won’t come out and highlight the point, It also says that there’s no real benefit to spending money and using nutes at all for the last two weeks. Might as well fade your nutes for the last two weeks and save some $$.

“ After harvest, the plants were cured and tested for final trimmed flower weight, terpene, and THC concentrations. Lab analysis found no significant differences between the different flushing treatments for flower yield, THC potency, or terpene content.”

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Renfro said:

I have known this for decades.

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twalte said:

Interesting High Times article on flushing and the findings in a blind taste test. The only thing to keep in mind is that this study was sponsored by a nutrient company. If I read between the lines, The test also showed that fading nutrients did not appear to hurt the plant’s yield. For your reading pleasure.

New Research Shows Flushing Plants Before Harvest May Be Unnecessary

In a blind taste test, researchers have found that many prefer cannabis that has not been flushed before harvest.

hightimes.com

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ChristmasBaby said:

Hello Mates! Fading nutrients is the method I like best. Cheers thanks for sharing.

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Interesting topic: I had two plants, one dry, one drying, one plant no flush, other plant fading nutrients. The same species. At first comparison, the fading nutrient plant ended up with more mass and heavier frosting. I think that one specimen displayed better genetics, although the flavor and other comparisons to follow. Each of the plants matured weeks apart, propagated at the same time, living in the same box, same Canna nutrients. (in clay) The fragrance seems to be the same. More to come.

Lol

I use straight water in my last feeding and let them run dry till chop. If people think flushing with pure water produces less plant, or less quality of plant, I can't imagine what they'd say about no water (even though THCA concentration was shown to improve by 12% and THC yield (g/m2) was shown to increase by 50%).


Flush or don't, but I choose based on peer reviewed research. I'd like to see the actual study. Not sure the level of expertise "RX Green Technologies" posses, nor their motive. They did a blind "taste test" and found users to prefer unflushed plants? *chuckle*.. hmmm... seems like people actually can tell a difference. In terms of takeaway data, all this tells me is that some people like certain tastes, and that those tastes are more prominent in unflushed material.

If you want more plant with more cannibinoids I'd recommend starving in the last 10 days rather than shoving it full. On top of more weight, more THC, and higher concentrations of THCA (is converted to THC when burned/smoked, cured, or "decarboxylated"), it's also cheaper...

I wonder if RX green technologies is coming out with a new fertilizer, or sells a fertilizer line?... If I were selling nutes I'd want ppl to use them more than needed too....

EDIT:
After looking at their website I found they were heavily invested in the nutrient game, selling primarily nutrient related products. I couldn't find the "taste test study" under their "technical papers" link. I'm a bit skeptical to their claims based upon their implied motives.

Flushing is a scam to make you look like a idiot imo