Rainbow Exotic Bud: What Determines The Color Of Weed, Useful Tips For Growing

Rainbow Exotic Bud

Surely you have already enjoyed more than once photographs of marijuana bushes of various colors and shades. But have you ever thought about the fact that such a miracle may one day grow in your own pot and give a crop that would delight not only in effect, but also in appearance? It is not so difficult to do this – you just need to choose a strain with the appropriate genetics, allowing colorful weed to form colored colas, and perform a number of simple manipulations to make them as vivid as possible.

Why Does Weed Turn Colorful?

The color of cannabis always depends on the amount of certain pigments in the tissues of the rainbow weed plant. For example, most flora on Earth are green because they contain chlorophyll. It is not just a pigment, but also an extremely important substance, without which photosynthesis would be impossible. But when the bush approaches the end of its life phase, the amount of chlorophyll in it decreases, and other pigments break through. For example, anthocyanins.

The increased production of anthocyanins helps multi-colored weed to cope with stressful conditions more easily. This substance gives the foliage a purple or even black color. The amount of this pigment is highly dependent on genetics. Therefore, for example, indica, whose homeland is the foothills of the Hindu Kush with a very harsh and changeable climate, are always darker than sativa. Cultivars growing under constant stress can take on a purple color even during the growing season, at the very beginning of their life.

Anthocyanins can color a beautiful weed plant not only purple or black, but also pink, red or brown. Remember the riot of colors in the fall – the processes described above take place in plants. The specific shade also strongly depends on the level of acidity of the cell contents. If the balance shifts towards an acidic environment, the leaves can turn reddish, if towards an alkaline environment, they would turn bluish. The level of acidity of the environment is strongly influenced by the ripening process of colorful buds. For this reason, some strains change their color depending on the stage of life.

Common Cannabis Colors


It appears when the pH of the bush goes beyond 8. In other words, the environment becomes not neutral, but alkaline. All the same anthocyanins are responsible for the color itself.


Weed turns red when its pH drops below 5. Anthocyanins, when exposed to such conditions, acquire a reddish tint.


Here, the main coloring matter is no longer anthocyanins, but xanthophylls. These are also pigments, but already belong to the class of carotenoids. They are contained in the body of a plant at all stages of its life cycle, reaching the highest concentration in the leaves. Xanthophylls also participate in photosynthesis, performing a photoprotective function. But since there is many times more chlorophyll, these pigments are noticeable only when the latter begins to disintegrate.


The orange color comes from a pigment called carotene. It is also found in huge quantities in carrots. Cannabis produces this substance throughout its entire life cycle. If this process is additionally stimulated, then after the breakdown of chlorophyll it’ll be possible to observe a real colorful weed bush.


In fact, black cannabis strains never turn completely black. It is more correct to say that this is a very deep purple, blue or green hue. This feature is manifested as a result of a serious overabundance of anthocyanins. Usually, the plant is already genetically predisposed to this color from the very beginning. Also, this shade is associated with a decrease in the level of chlorophyll and the dominance of other pigments.

The Main Parts of Cannabis That Affect Color

How to Grow Exotic Weed

Many people think that the dried inflorescences of a colorful bud should also be bright and colorful, but this is far from always the case. In fact, the final color of the bud is determined by several of its constituent parts at once:

• pistils – remain after drying and are responsible for blotches of red and orange;

• calyx – create a color basis, mainly, and influencing the color;

• colorful weed leaves – they have a minimal effect on the color of dried cones, as they are mostly removed during manicure;

• trichomes – also have little effect on the final color.

Colored Pistils

Colored weed is abundantly covered with them even after drying, so this part of the plant significantly affects the final shade. It should be borne in mind that, when dry, the pistils change their color. For example, orange hairs turn brown, and pink hairs turn bright red. Thus, even the most common light green bud can become colored, because its main color would show through the prism of pistils.


Cannabis cola is hundreds of small flowers gathered in a dense bunch. It is from their colors that the general color of the cone depends to a greater extent. At first they are all green, but as the color strain matures, you can see more and more flowers change their color. Turn purple, violet and red weed plant.

Even a small amount of pink calyx can give the entire bud a matching hue. And if you crush such a pink marijuana bud, then individual fragments may turn out to be completely purple. The brightness of the dried inflorescences directly depends on the percentage of multi-colored calyx.

Colorful Leaves

The color of cannabis is more dependent on the color of the leaves, while the buds themselves remain green. These plants look fantastic on a plantation or in a grow box, but since most of the leaves are removed by trimming, the final product is not particularly striking in terms of color.

The most curious thing is that you can grow a bush with purple leaves from almost any rainbow colorful weed strains. Pigments called anthocyanins are responsible for this color. Under normal conditions, green chlorophyll hides them, but if you force its molecules to disintegrate, amazing purple and red shades would come out. A similar effect can be seen in the fall. Fallen leaves change their color precisely because of the breakdown of chlorophyll, giving way to other pigments.

You can start this process artificially by arranging light or temperature stress on the plant. In the first case, you need to lower the temperature in the greenhouse at night, and in the second, expose the rainbow exotic bud to a lot of UV radiation.

Colored Trichomes

Even beginners know that trichomes, as the bush matures, change their color from transparent to milky, and then to amber. But there are strains where the trichomes booster can be pink or purple. On the one hand, it is very beautiful, on the other hand, it makes it difficult to determine the time of the harvest. In this case, you need to focus on pistils. When the plant is ready, they will dry out and become darker.

Unfortunately, all this beauty lasts exactly until the moment the crop is harvested. After drying and curing the buds, the trichomes can become faded, and the calyx would form the basis of the color palette.

How to Grow Exotic Weed?

Colorful Marijuana Strains

As we said at the very beginning, before thinking about the use of cunning agricultural techniques, you must first select a reliable basis – if the genetics of the strain does not provide for the coloring of inflorescences in colors other than green. When the right seeds are selected, germinated and planted, you can begin to help the bush to reveal its color potential to the maximum.

  • Set a favorable temperature regime.

A regime with a noticeable difference between day and night temperatures contributes to the appearance of purple and purple cones, if this is inherent in the genetics of the strain. If your chosen colorful weed strains have a different color, then this procedure is not necessary.

  • Provide bright direct light.

The appearance of purple is somewhat similar to the tan we get in the sun. The brighter the light and the longer the “daytime” period of the cycle, the brighter the purple or violet hue on the leaves and inflorescences of colorful cannabis. This condition is not necessary for all strains, but most are more willing to show their ability to color leaves and inflorescences in bright light.

  • Experiment with the pH level.

It can affect the color of flowers in various plants. For example, some types of hydrangeas turn blue in highly acidic soil, but turn pink when grown in neutral or only slightly acidic soil. With regard to weed tint, such studies have never been purposefully conducted, but there is information that such a relationship exists here as well.

If you are growing several colorful marijuana plants of the same strain, it makes sense to experiment by setting a different pH level in the root zone for each one. If you manage to install a stable.

  • Choose the strain with the most colored parts.

This is obvious, but in order to get a dry product with the most intense color, you need to choose a strain, the largest number of parts of which would have an exotic color. Calyx, leaves, and pistils should be colored. You can experiment with color combinations. So, for example, orange pistils against a background of dark purple stakes look amazing!

  • Choose the darkest colorful weed strains.

Buds that have delicate blue or pink hues tend to lose their color after drying and curing. At the same time, deeply colored, dark (black) strains retain their color best after harvesting. It is important that this color affects all parts of the inflorescence, and, ideally, the leaves closest to the stake.

It should be understood that it won’t be possible to completely preserve the color of cannabis inflorescences after drying and curing in any case. Just as green buds turn brown or reddish, purple ones reduce the richness of the color, gray or almost blackening. If you see a bright, juicy purple bump, it is most likely either underdried, or there is some kind of trick, which may not be completely organic in nature. Although the intensity of the color is determined primarily by genetics, the grower can also help the cannabis grow to its fullest potential.

Colorful Marijuana Strains

We suggest paying attention to the following strains, which can definitely delight fans of colorful kush:

LSD-25 Auto fem

LSD-25 Auto fem

One of the brightest stains is the inflorescences of which, as they ripen, first turn purple, and closer to the harvest they become almost black. The strain is extremely easy to grow and can forgive a beginner grower for almost any mistake other than insufficient watering. The powerful psychedelic effect lives up to the name of the strain.

Blackberry Auto fem

Blackberry Auto fem

This rainbow colored weed strain is mesmerizing in both its effect and appearance. The purple blossoms exude a rich forest berry scent with hints of pine needles and earthiness. The body immediately relaxes, and the mind is detached from any negativity and worries. Be careful, as the buds can easily stick even the most experienced grower to the couch.

Caramelo fem

Caramelo fem

The riot of colors demonstrated by this most colorful strain during the flowering period can be admired forever. The main thing is not to forget and harvest on time. Sativa THC can give you a feeling of flight and total happiness. All bad things would simply cease to exist, this feeling can stay with you for several hours.

The authors of the blog wish you to successfully grow your chosen color cannabis cultivar and follow the advice from our article. Let the beautiful and bright leaves of weed delight you!

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The content on this channel does not form a professional opinion, recommendation, substitute for consulting a specialist, or receiving medical advice. Cannabis is a dangerous drug, as defined in the Dangerous Drugs Ordinance, for all that assumes. Four Hundred and Twenty does not encourage or recommend consuming any substance and will not be responsible for any such use.


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