Purple Weed

Purple Weed: Truths And Myths About This Type Of Marijuana

Purple weed is pretty to look at but one look will raise many questions as to why the weed is purple. There’s a science as to why purple weed exists and it won’t affect a person’s high one way or another.

Purple Weed: Key Takeaways

  • Purple weed is a result of certain flavonoids that are present in high enough amounts turn the leaves purple.
  • Manipulating nutrient density and composition is not going to create a differently colored cannabis plant.
  • The purple color doesn’t come from nitrogen overload.
  • Depriving cannabis of carbon dioxide will not give weed the purple color.
  • There isn’t just one type of purple weed, there are many.

Myths About Purple Weed

Before going into the details of purple weed, is it important to first address and dispel the myths surrounding the topic of purple weed. People often assume certain things and then accept these assumptions as fact.

This obviously stems from a lack of lack of education about plant nutrition and gene expression. That being said, there are several myths that need to be debunked for correct learning to take place:

Different Growing Medium

Manipulating nutrient density and composition is not going to create a differently colored plant but it does threaten the health and even the survival of the plant. Giving a plant too little can cause starvation and death of the plant and too much of certain nutrients can cause sickness as the next point illustrates.

Nitrogen Overload

Too much nitrogen can make a plant sick. They need just enough nitrogen to grow properly but any nitrogen overloads and it can turn a sick brown color and die. Therefore, the purple color in plants is not from an ample supply of nitrogen.

Carbon Dioxide Deprivation

CO2 spelled out in clouds

Plants need consistent access to a plentiful supply of carbon dioxide. Period. This is because plants and trees use carbon dioxide to feed themselves. If there is not enough carbon dioxide, the plants either don’t develop properly or starve and die.

Therefore, depriving weed plants, or any other plant, of carbon dioxide, will not make a marijuana plant purple. Rather, it will create an unhealthy plant, even killing it.

Varying Amount Of Water

Plants already naturally receive varying amounts of water through their roots due to the fact that rain does not fall every day. Plants are highly adaptable and can go days, or even weeks, without water.

Therefore, if varying water conditions were the key to purple weed, every cannabis plant strain, and every plant in general for that matter, would be purple.

Oxygen Deprivation

Just as human beings need oxygen to survive and thrive, so do the purple cannabis plants. All plants need oxygen to grow properly and blossom into full-grown, healthy plants that contain all their many health benefits. So this myth is most obviously false.

Altering The Light Cycle

Again, plants need plenty of their organic aids in order to grow properly so that they can adequately give us their healing properties. Light gives them the energy they need to undergo the photosynthesis process, which is what produces their food for optimal growth and health.

Plants that do not receive enough natural light do not end up being healthy and can even die.

Why Is Some Weed Purple?

Purple weed plants

Some cannabis strains are purple due to a certain flavonoid that is present in high enough amounts to turning the leaves purple.

Just as there are different colors and other differing traits of flowers due to their varying genes and hence, their chemical composition, there are marijuana strains that have different colors, one of them being purple.

Is Purple Weed Better?

This depends on what a person desires in their weed.

Some people who want to consume cannabis for its health benefits and for medicinal relief, such as reducing inflammation, chronic pain, and mental disorders, may say that purple weed is better because most purple cannabis plants do not contain extreme levels of THC.

The THC that is present in most purple weed strains is more Sativa dominant, which gives more of an energizing, inspiring, and creativity-inducing high.

This allows them to experience just enough of a therapeutic high to uplift them as well as give them relief of their various symptoms without it becoming so sedative on their bodies that they can’t function.

On the other hand, if a person is consuming cannabis solely for the highly sedative qualities that some high-THC strains offer, then they might argue that purple weed is not the best option. However, that being said, there are a couple of Indica dominant strains of purple weed worth mentioning that might change a naysayers mind about purple weed.

One strain, called Purple Afghani is a potent Indica-dominant strain, with a 75 percent Indica dominance. The other strain is called Purple Trainwreck, which can also give people more powerful sedation.

The Science Behind Purple Weed

Purple cannabis bud

There is a simple explanation for why purple weed is purple. It is due to the chemical make-up, or the gene expression, of this unique marijuana plant:


You may have heard about flavonoids in health literature. Flavonoids help a person’s health with their anti-inflammatory and antioxidant power. The most prevalent and well-known flavonoids are kaempferol, quercetin, and carotenoids. This is one of the reasons why weed can be so beneficial for one’s health.

However, in this case, flavonoids are also responsible for a plant’s color. Flavonoid content within a plant produces the pigments that make the plant the color that it is. In purple weed’s case, the dominant flavonoid responsible for its purple hue is called anthocyanin.


Anthocyanin is what gives a plant its blue, red, or purple color. The reason that purple marijuana plant is purple is that the anthocyanin flavonoid mixes with the neutral pH, neutral being a balance of acidic pH and alkaline pH, which is just the right chemical transaction that produces a purple hue.

The perfect mix of the neutral pH and anthocyanin is a result of the genes contained within the plant just as some people have the genes to have brown hair and some have the genes to have blonde hair.

Note: It is good to know that there exist purple flowering plants that are not marijuana plants. These plants also contain the proper gene expressions, with just the right amount of anthocyanin, and can even look a lot like the purple weed plant.

One such flowering plant is called purple deadnettle, the scientific name being Lamium Purpureum. This invasive species is an aggressive grower. The Greek translation of Lamium Purpureum is the “devouring purple monster.”

Also, like the purple weed, this plant prefers cooler weather, such as early spring, fall, and warm winters.

How To Grow Purple Weed

There are two main factors to growing purple weed that growers should be aware of in order to produce properly grown, healthy purple plants the right plant seeds and the right growing conditions:

Right Plant Seeds

You want to make sure that the seeds you buy are already high in anthocyanin. If you choose seeds that are higher in carotenoid, you will have more of a yellow plant. The following seed strains will grow you great purple weed plants:

  • Sour Grape
  • Purple Haze
  • Blue Cheese
  • Blue Mystic
  • Northern Light Automatic
  • Bluematic
  • Haze Berry

Reproduce Fall Temperatures

The reason that leaves change colors in the fall is that the chemical that helps a plant maintain its green color, chlorophyll, lowers in the plant with cold temperatures, therefore giving anthocyanin a chance to overpower the chlorophyll and start turning the leaves a different color.

Consequently, if you want to grow healthy, adequately purple-colored weed plants, you will not only have to make sure you pick the right genetic strain, but you will also have to make sure that the environmental conditions are just right.

Thermostat showing 60 degrees weather

Or in other words, mimic fall temperatures, so that the leaves reduce their chlorophyll production.

This means during the growing period, you will have to make sure that the temperature surrounding these plants are just below 50 degrees Fahrenheit during the flowering process. The result of this, if done consistently, should grow a purple weed plant within two weeks.

The Benefits Of Purple Weed

As mentioned earlier, purple weed contains antioxidant flavonoids, mainly anthocyanin, that can fight disease, reduce inflammation, and slow aging.

This is great news for so much of the population that struggles with some type of health ailment, or multiple health ailments, that could potentially improve over time with the consumption of purple weed.

Darker colors in plants generally mean that the plant has more antioxidant power due to there being more flavonoid content. This is why blueberries and dark leafy greens are so praised for their health benefits.

However, that being said, more studies need to be done on this unique strain in order for the claims of these health benefits to be proven and administered medicinally.

Purple Weed Strains

There are three varieties of cannabis that produce not only purple colors but also impressive flavor and pleasant aromas:

Purple Haze

The descendent of Purple Thai and Haze, this light purple lavender sativa plant is a balanced mix of earthy and sweet with undertones of spice and berry.

Purple Diesel

Purple Diesel is another Sativa dominant purple weed plant that has a sour smell and taste. Its parents are Sour Diesel and Pre-98 Bubba Kush.

Sour Grape

Just as the name conveys, this purple weed strain smells and tastes just like sour grapes. Descendent of Sour Diesel and Granddaddy Purple, this strain of weed smells and tastes of fuel and fruit mixed with the almost shocking sour taste.

Smoking Purple Weed

If you are wanting weed that will give you a great cerebral experience, promoting feelings of euphoria, creativity, and even reducing any chronic pain you might have, then consider purple weed as your next best choice.

Not only will you experience its calming and uplifting qualities but you can also look forward to benefiting from its anti-inflammatory, anti-aging, and antioxidant benefits.

What’s not to love about this weed strain?

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