Most people familiar with Kratom will know that red vein strains are traditionally known as being calming and relaxing. White vein varieties, on the other hand, are known for their bright, energizing, and motivating effects. And, green vein strains tend to fall somewhere in between—offering a balanced boost in energy and motivation, while still delivering a moderate amount of relaxation and ease.

If you’ve ever wondered why these red, green, or white vein Kratom strains seem to have such different effects—even though they originate from the exact same tree (Mitragyna speciosa)—you’re not alone. What makes one strain feel energizing and yet another relaxing? These, sometimes wide range of effects, are largely determined by the post-harvest drying and curing techniques that are used on the Kratom leaves.

Here’s how it works.


What Makes Each Kratom Color Unique?

Green vein Kratom is air-dried indoors to preserve a balanced alkaloid profile—often described as being motivating and mentally focused. 

White vein Kratom is generally made through extended sunlight drying or blending techniques. It’s known for a more stimulating, “coffee-like” energy, and most often has a lighter shade of green than a typical green vein variety.

Red vein Kratom typically has longer drying times and will often undergo fermentation; creating a more oxidized and dark green-to-red appearance in the end product. This longer drying time and fermentation process, through intentionally altering alkaloid levels, often produces a more relaxing and calming product.

Indoor vs. Outdoor Drying

Indoor Drying (Low Light, No UV):

    • Helps preserve mitragynine, Kratom’s primary alkaloid.
    • Typically produces a brighter green powder.
    • Effects are often more energizing and focused.

Outdoor Drying (Sunlight/UV Exposure):

      • Exposure to sun can convert some mitragynine into 7-hydroxymitragynine
      • Leads to darker-colored Kratom, especially in red strains.
      • Often feels more relaxing or calming

Drying Duration

  • Shorter Drying Times:
    • Helps retain mitragynine, resulting in a more uplifting effect.
    • Keeps the leaf color brighter and greener.
  • Longer Drying Times:
    • Encourages oxidation and alkaloid conversion, leaning towards relaxation and calming effects.
    • Produces darker, heavier-feeling Kratom.

Fermentation (Used in Red Vein Strains)

  • After partial drying, leaves are placed in bags or covered containers to ferment.
  • This process enhances 7-hydroxymitragynine and other calming alkaloids.
  • Fermented Kratom is known for:
    • Richer, darker color
    • Heavier, more calming body effects
    • A smoother, earthier aroma

All of these post-harvesting techniques will, to a varying degree, change the alkaloid ratios and moisture levels within the leaf; leading to noticeable differences in how each Kratom strain looks, as well as the effects it provides.

Below is a graph noting Kratom’s primary alkaloids and their corresponding properties:

Even small changes in the post-harvest process can affect the alkaloid profile of the Kratom leaves.

An appropriate comparison can be made to the harvesting and processing of traditional tea leaves. Green, white, black and puereh tea are not different strains of tea; they all come from the same plant, Camellia sinensis. However, different drying processes are applied to the leaves after harvest to yield, not only different colors, but the unique tastes and energetic effects associated with each color of tea. Green tea is not a different strain of tea from black tea or white tea. There is only one tea plant. What makes the finished product unique is what humans do to it after it’s been harvested.

Why This Matters When You Shop For Kratom 

When you browse Kratom online and see names like “Maeng Da” or “Green Malay,” those aren’t different species. They’re processing styles and blending recipes that affect the final product’s effect profile.

At Blue River Wellness, we ensure that every strain we offer is:

• Carefully sourced and blended from traditional Indonesian farmers who practice optimal post-harvesting drying, curing, and fermentation.

• Remarkably consistent in its quality and potency

•Lab-tested for purity, strength, and safety

 

Final Thoughts

At the end of the day, understanding Kratom strains isn’t about chasing flashy names—it’s about knowing where your product comes from, how it’s processed, and how it affects you personally. At Blue River Wellness, we believe in transparency, quality, and consistency above all else. Whether your aim is for focus, calm, or balance; our carefully selected Kratom selection is designed with intent to help you find what you’re seeking—and, without the confusion. Let nature speak for itself.

Shop Blue River Wellness Kratom Powder, Capsules, and Crushed Leaf→