What makes pot plants turn purple?

Purple is a popular color in the world of cannabis, and there are a number of strains that boast a deep, rich purple hue. But what is it that causes some pot plants to turn purple, and is it just an aesthetic feature or does it affect the plant's potency?

The role of genetics

First and foremost, the color of a cannabis plant is largely determined by genetics. There are some strains that are naturally predisposed to turn purple, and breeders can select for these traits to produce plants that are more likely to display purple hues.

Additionally, there are environmental factors that can trigger a color change in cannabis plants, but these changes may not be as dramatic or reliable as those caused by genetics.

The importance of temperature

Temperature is one of the key environmental factors that can influence the color of a cannabis plant. Specifically, cooler nighttime temperatures can trigger anthocyanin production, which is responsible for the purple coloration.

Anthocyanins are a class of plant pigments that are also responsible for the red, blue, and purple colors found in fruits and vegetables. They are produced in response to environmental stress and can act as protective agents for the plant.

Other environmental factors

In addition to temperature, other environmental factors that can influence the color of cannabis plants include light intensity, pH level, and nutrient levels.

Exposure to UV light, for example, can cause an increase in anthocyanin production and lead to a more pronounced color change. On the other hand, high pH levels can inhibit anthocyanin production and prevent the plant from turning purple.

Does purple cannabis have higher potency?

While there is some anecdotal evidence to suggest that purple cannabis may have higher potency than green or brown cannabis, there is no scientific research to support this claim.

That being said, there are some strains that are known for their high potency and deep purple coloration, such as Granddaddy Purple and Purple Urkle. It is possible that these strains have been selectively bred for both their color and their potency.

In conclusion

In the end, the color of a cannabis plant is largely determined by genetics, and environmental factors such as temperature can influence the degree and intensity of the color change. While there is no evidence to suggest that purple cannabis is inherently more potent than other colors, there are certainly some highly potent strains that display a vibrant purple hue.

Regardless of color, the potency of a cannabis plant is largely determined by the strain and the method of cultivation, making it important for consumers to do their research and choose high-quality products from reputable sources.