For cannabis, depending on the lineage of the strain, certain colors can appear when you drop the temperature and the light cycle shortens, simulating a change in season. Chlorophyll is the plant component vital to photosynthesis and cooler temperatures inhibit chlorophyll production. The same is true for cannabis: once the green fades, the colors appear. As the temperature drops, they change from green to red, orange, yellow or gold.

They are odorless and moderately astringent, and can appear red, blue or purple according to their pH. They occur in all tissues of higher plants, including leaves, stems, roots, flowers and fruits. So where do those amazing bud colors come from? In a word, anthocyanins.Īnthocyanins belong to a parent class of molecules called flavonoids and are synthesized via the phenylpropanoid pathway. Even today, with all the knowledge we have available when making our weed purchases, there is nothing more appealing than a jar of colorful buds.

Long before cannabinoid testing began, customers made their choices mostly based on smell and color.

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