Purple buds - Anthocyanin production and Chlorophyll degradation

Anthocyanin and chlorophyll
I am currently growing a few cannabis pants from bag seed that came with some form of purple kush. I am veging until 6 th set of true leaves than 24 hour dark period and flower. I am trying to make purple buds of these plants, and am not sure how to produce them and have not seen any substantial information on how to do so. I know anthocyanin is the second most common pigment in cannabis (followed of course by chlorophyll) and changes in color from red yellow and purple based on pH. In pants anthocyanin is present in the surfaces of almost all parts of the plant, in leaves it serves several purposes and shows with the degradation of chlorophyll in autumn (that's what causes the fall colors). In flowers it's used to attract pollinating insects and other animals. So inducing normal chlorophyll degradation may not effect the bud color or effect the lead and bud color, which would of course be negative to my purpose. So um, help?

all you have to do is lower night time temps and make sure there healthy.. in the northeast where its cold by the end of the season almost every plant turns purp.

Thanks, that's really helpful! But, can anyone tell me why?

i believe it is just the natural response to lowered temperatures

The colder temps lock out phos, therefore turning them purple. Dont force purp a plant, not good for it

Thanks Micromaster, I know it slows plant growth, but I've heard you force it the 7 th week of flower, and you flower for an extra week. But I don't know it'd actually work.

Closet Grow said:

Thanks Micromaster, I know it slows plant growth, but I've heard you force it the 7 th week of flower, and you flower for an extra week. But I don't know it'd actually work.

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unless youre selling and want "bag appeal" dont do it. Doesnt make the plant any more potent

Yeah I know it doesnt, and I'm not selling it. I just wanna show off the buds I grew to my friends

I believe a quick blast of nitrogen towards the end of the cycle (though I've actually only seen the colder temp. method in action--on my outdoor grows; it happened automatically) will produce a similar effect. Quick temperature drops don't help anybody.

~ooli~

I have 90% success turning all my plants purple its kinda weird I accomplish this thru heavy foliar feeding of kelp, amino's and purple max every few days from start to finish some strains have so much Anthocyanin that they actually bleed .. i also use led for flower 40% blue wavelengths so accessory pigments get good absorption

It is more than ok to drop temperatures at the end of flowering, in fact probably recomended, but not to an extreme extent. I don't agree with mimicking nature in your grows all of the time, but dropping the temps at the end of the flower cycle, not too much and not too quickly, will definately cause your plants to show more color. This will not turn all of your plants just pure 100% dark purple like stress inducing them through extreme and quick drops in temperature would, but some strains and phenotypes will show more purple, red, pinkish colors towards the end of the cycle when temps are slightly decreased as what naturally happens in their natural environment.

Stress induced purple colored plants look like shit IMO.

datruth585 said:

I have 90% success turning all my plants purple its kinda weird I accomplish this thru heavy foliar feeding of kelp, amino's and purple max every few days from start to finish some strains have so much Anthocyanin that they actually bleed .. i also use led for flower 40% blue wavelengths so accessory pigments get good absorption

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I think that purple max has some kind of cancer causing material in it
Ill look for the link an repost it.

hola muy buenas

ooli said:

I believe a quick blast of nitrogen towards the end of the cycle (though I've actually only seen the colder temp. method in action--on my outdoor grows; it happened automatically) will produce a similar effect. Quick temperature drops don't help anybody.

~ooli~

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A green plant wont turn purple unless genetically predisposed to the condition typically. Nitrogen at the end of flowering is a mistake, as it should be in flush by this time. Excess nitrogen is not only unhealthy, but also will be food for mold spores and rot during flower, and dry times.

A quick blast of liquid nitrogen would freeze and kill the plant, both are bad ideas

pharmacoping said:

A green plant wont turn purple unless genetically predisposed to the condition typically. Nitrogen at the end of flowering is a mistake, as it should be in flush by this time. Excess nitrogen is not only unhealthy, but also will be food for mold spores and rot during flower, and dry times.

A quick blast of liquid nitrogen would freeze and kill the plant, both are bad ideas

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all natural expressions, from superior genetics.

The macro of that purple trich is fucking crazy

pharmacoping said:

A green plant wont turn purple unless genetically predisposed to the condition typically. Nitrogen at the end of flowering is a mistake, as it should be in flush by this time. Excess nitrogen is not only unhealthy, but also will be food for mold spores and rot during flower, and dry times.

A quick blast of liquid nitrogen would freeze and kill the plant, both are bad ideas

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pharmacoping said:

all natural expressions, from superior genetics.

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I'll second that.

View attachment 2185725View attachment 2185726
(Livers/Blues)

As a preceding post indicated, Anthocyanin is only produced if the associated strain is genetically predisposed to do so. Although most plants can adapt to various conditions, if you want FULL expression, consider two critical variables: 1) Research has established that white light is important for Anthocyanin expression. White-Light-Blending will effectively cover the mid 500nm's and enhance the development of Anthocyanin. This will occur, because there is peak Anthocyanin production at about 540nm. 2) Anthocyanin is also pH-dependent. Expect improved Anthocyanin production at about 4.5 pH. Yes, this is well outside the typical range for nutrient absorption, so I suggest you seek some expert advice regarding such a drastic change in pH. I have not personally explored such a huge modification to feeding; nevertheless, I would expect that as you get close to harvest, a more moderate change (maybe a pH of 6.0 to 5.5) would be enough to improve Anthocyanin production.

Just get yourself some of Sannie's Killingfields seeds. You'll get your purple and purple trichs. Or buy a can of spray paint.