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what is purp weed

What is purp weed

Weed porn spreads in magazines usually feature one plant with insanely purple flowers. Chemovars or strains like Purple Pineberry, Grape Ape, Grand Daddy Purp, Mile High Purp, Purple Kush, and KF7 can more closely resemble violets than they do cannabis. How does cannabis get such a wide range of colors? And how can a growers cultivate these hues in their own plants?

Cannabis Chemistry: Anthocyanins

The cannabis plant, like any other plant, contains several classes of chemicals. Cannabinoids like THC and CBD remain the most famous, but terpenoids like pinene and myrcene are gaining popularity as the public learns more about cannabis. Flavonoids and polyphenols are additional compound categories slowly coming to the forefront as researchers continue to crack cannabis’s biochemical profiles.

The purple color found in cannabis comes from another category of molecules called anthocyanins. Technically a blue-purple pigment, anthocynanins are responsible for the full range of cooler colors displayed by cannabis plants, from blue to violet. Other purply plants, such as plums and eggplants, also produce anthocyanins. Additionally, these compounds may confer health benefits, such as antimicrobial or antioxidative properties.

The green in cannabis comes from chlorophyll — the little verdant organelles that generate the plant’s energy from sunlight. Anthocyanins naturally reside in all cannabis plants, but the presence of chlorophyll often buries the purple light that would otherwise reflect from the flowers.

Because of chlorophyll’s purple-masking effects, anthocyanins become most visible after the curing process breaks down some of the buds’ chlorophyll. Growers can also force the coloring by fiddling with temperatures in a grow room.


How to Grow Weed So Purple It’s Practically Black?

Black weed? That’s a real thing. BC Bud Depot in Canada sells a plant called The Black known for its unusually dark, deep violet shade. Although The Black’s lineage is a mystery, it likely doesn’t grow this way on its own.

In fact, it’s possible to cultivate purply cannabis plants in a way that minimizes chlorophyll production. To do this, simply lower the temperature during the 12/12 light cycle to 10°C (50°F) during the dark phase.

By lowering the temperature, the plant behaves as if autumn just started. Like brown and red maple leaves littering the streets in the fall, triggering a false autumn forces cannabis to cease chlorophyll production. If the plant already produced ample amounts of anthocyanin – strains such as Black Widow, Black Mamba, Black Diesel, or The Black – with the green gone, it will eventually appear black due to the anthocyanin concentration.

For growers looking for feeds or nutrients to jack-up anthocyanin production, there aren’t any. Only climate changes and genetics can get Mary Jane looking so regal.

We usually associate cannabis with green, but the plant’s flowers come in a variety of colors. Why exactly does this happen?

Why Does Weed Turn Purple? Truths and Myths about Purple Cannabis

Thursday April 5, 2018

I n these modern times of cannabis consumption bad information still runs rampant, and few things in the world of weed have as large a mythic standing as purple bud. This seemingly simple topic can actually be a bit convoluted, starting with, what is purple bud? The short answer is cannabis flowers that exhibit a darker, purple-tinged hue. However, it is not always the shade most people think of as “purple.”

Purple cannabis can be a tricky concept. Just stop for a moment and contemplate the timeless line, “roses are red, violets are blue.” A modern sensibility would correct that the color of violets is none other than violet. Similarly, purple weed is not always “purple.” It can have a wide range of presentation, from dark green to even black.

Why is Some Cannabis Purple?

Consider that what we call a blueberry is also usually quite purple. This is because the very thing that makes blueberries “blue” is the same as what makes purple nugs “purple,” anthocyanins. Anthocyanins are water-soluble pigments present in many plants. Despite the “cyan” in “Anthocyanins” referring to their blue nature, these molecules occur in a range of colors from red to purple to dark blue, or black, depending on pH level.

Anthocyanins are part of a larger class of substances known as flavonoids, which aside from how the name sounds, have very little to do with flavor (and are astringent to the taste). In fact, the “flav” in flavonoids comes the Greek word for yellow, flavus.

This can be a bit linguistically confusing; a blue-named class of molecules that presents as red or purple is a subset of a class of yellow-named molecules. It begins to make sense when we consider that a complex interaction of anthocyanins and other flavonoids is what causes leaves to change their color among such a brilliant spectrum in the fall.

When cannabis presents as purple, we are seeing a similar phenomenon as fall leaves, allowing purple bud to have a wide spectrum as well. Like other plants for cannabis, colors, and changes in color, have purpose. The stressed plant is changing pigment in order to achieve a goal before wilting in the cold, such as conserving energy or increasing chances for pollination.

For cannabis strains, the ability to present darker pigments, and to what degree, is wholly dependent on the plant’s genetics.

Without a predisposition to purpling, a given strain cannot be induced to turn purple. Certain strains will have more naturally occurring anthocyanins than others, and when switching to the “winter” cycle of flowering, will start to express those purple pigments innately according to their genetic predisposition interacting with the unique chemical and environmental factors in which the plant is grown.

Is Purple Marijuana Better?

Visual appeal aside, is there reason to believe that these royal-toned flowers are better than the green hues more common to the plant? The science leans towards no.

According to the European Food Safety Authority, there is no substantive evidence anthocyanins have any effect on human biology or diseases – though they contain a higher concentration of anti-oxidants, which would theoretically only be beneficial if one were eating buds. There is some minor proven correlation to anthocyanins as an anti-inflammatory, but again, would probably be more active if ingested. Seeking a strain with higher CBD content would be a better source for anti-inflammatory effects than purple hue.

In general, purple bud has a tendency for lower THC content than its greener counterparts. That’s not to say high-THC purple is not possible, we’re sure we’ve all seen or smoked an exception to the rule. That is because most purple bud that we see today is not a result of stressing the plant, but genetics.

To better understand this connection, I spoke with veteran grower and concentrate connoisseur Matt Gosling about the popularity of purple cannabis. While purple bud can be fantastic, he explained, it’s usually due to good breeding and genetics, and not much else.

“Purples are memorable. If you have a good high with purple bud, it’s going to stand out. Then if you’re a grower and you have the ability to then reinforce those genetics you’re going to, and it propagates itself from there.”

Anything beyond breeding could detriment the plant. “Any energy the plant spends pushing out that purple pigment is going to be drawn from somewhere else and is going to hurt overall. It’s just not worth risking the quality for a chance a slightly better bag appeal.”

Myths about Purple Weed

Some people believe that there are growers out there who bring out purple hues by manipulating the plant, however, the prevalence of such practices seems to largely be a myth. I rattled off a list of alleged techniques for inducing purple bud to Matt, such as affecting nutrient levels or flash freezing, and he quickly declared them bunk.

That’s not to say attempts at purpling don’t occur at all, “I’ve seen some people use ice water to do their flush,” he told me, “some other tweaking with light timing, but I don’t recommend any of it.”

In speaking with growers, budtenders, flower reviewers and other cannabis journalists, the consensus among the industry is to treat each harvest as unique–smoke what appeals to you. If the effects of purple strain are appealing, go for it.

Furthermore, no one is wrong to feel that the visual appeal of a flower can enhance the smoking experience. However, ultimately, the mere presence of the pigment is unrelated to the resulting effects. If the flower is good, by all means smoke it, in any spectrum of the rainbow.

What are your thoughts on purple weed? Do you find it to be better than green cannabis?

Matt Mongelia holds an MFA in writing from The School of the Art Institute of Chicago. He has worked in the cannabis industry in various roles for 4 years, from dispensaries, production and retail to events, content and marketing. He is a writer for the comic Dark Beach, and has previously covered music and cultural content for SOL REPUBLIC.

Everyone cannabis enthusiast has a place in their heart for purple weed. Learn about why cannabis turns purple and some of the truths and myths behind it.