Getting deep purple color out of my GDP

Hey all, I just reached my 2rd week of flowering with a batch of GDP clones. Everything is going great, however, the purple color is not really showing. I have heard many different rumors of ways to catalyst the buds to go purple but I would appreciate more information on the topic.

Here is what I know:

Purple buds come from plant with a genetic predisposition for purple color.

Here's what I've heard:

-Lowering the temp at night and in general during the late flowering stage promotes purple growth.

-Starving the plants of nutrients towards the end of the flowering cycle promotes putple growth.

-Feeding plant magic "purple promoting nutrients" promotes purple growth.


Please, someone clarify this for me. The more input the better.

Thanks Everyone!!:thumbsup:


$tay Fro$ty

It's too early still...patience

Hey bro,

I got some GDP going too. Did you top or FIM yours at all? I read somewhere that purple kush shouldn't be topped, but not sure about GDP. I've got a bunch of side branches starting, but they won't grow fast at all. Its like one big bushy stalk! And this is only 3 weeks into veg from clone.

I've heard that it won't turn purple until the end of flowering. If you can lower your temps, that should do it.

I've seen some GDP that turned me off for how fake purple it looked. Looked like someone took a fuckin purple marker to it. I suspect its from the commercial formulations. I'm going to steer clear of that shit. I don't need an entirely pale purple nug! Just a few hints of purple in the buds is all you need for bag appeal IMO.

Quote:

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Originally Posted by mikeydubbs

Here's what I've heard:

-Lowering the temp at night and in general during the late flowering stage promotes purple growth.

-Starving the plants of nutrients towards the end of the flowering cycle promotes putple growth.

-Feeding plant magic "purple promoting nutrients" promotes purple growth.

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Well, you heard right.

The purple wont show until the end of flowering. I'm not sure if starving the plant at the end of flowering helps it turn purple, but you should starve it anyway to flush out the nutes.

I'm guessing thats your grow room in the pics... and holy shit i want it :thumbsup:

I decided not to top the GDP. I'm not a big fan of toppping indoor plant, I just chop lower branches to promote upper growth. I vegged my GDP for 5 weeks prior to flipping the lights. I obviously could have done it sooner but since GDP is a shorter, stalkier plant, I let them get about 20" prior to the flip.

Thanks for the props on the room Fad. It was a lot of work, but quality is always the highest proirity.

Purple is the most common color in living marijuana. Triggered by seasonal temperature changes (just as trees change color in the fall), the vibrant hues of the mature pot plant are also the result of genetics and the creativity of the cultivator or breeder.

Indoors and outdoors, color can be influenced by deficiencies as well as by temperature. The intense green of chlorophyll usually overpowers other colors, such as red, orange and the coveted purple. Chlorophyll tends to break down late in the season, and a pigment known as anthocyanin is unmasked and allowed to show through.

For purple color to develop upon maturation, a strain must have the genetic potential to produce anthocyanin pigments. However, the color might never be shown if environmental conditions donâ??t cause chlorophyll breakdown. Colombian and Hindu Kush strains tend to develop purple coloration when subjected to low night temperatures during the end of their life cycles. Purple Orangutan, originally from Afghanistan with heavy traits of the Hindu Kush, produces some of the darkest purple and blue tones found in any marijuana strain.

Another pigment called carotenoid is largely responsible for the yellow, orange, red and brown colors of marijuana. These colors begin to show in the leaves and calyxes of certain strains as the green chlorophyll color fades. Gold strains reveal underlying yellow and orange pigments as they mature. Red strains are usually closer to reddish brown in color, though certain carotenoid and anthocyanin pigments are nearly red, and streaks of these colors occasionally appear in the petioles (the slender stems supporting the leaflets) in ripe flowers. The red color in pressed, low-grade tops often consists of masses of reddish-brown dried pistils. (hightime info)


Friend of my also say it was cause of genetic defects the purple strain which comes from afghanistan has a deficiency of potassium causing it to bruise easily, so when cold the plant turns purple