The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 2897Hybrid

Koh Tao by The Landrace Team

Koh Tao is a landrace-derived hybrid strain preserved by The Landrace Team, reflecting the genetics of heirloom cannabis from the Thai island of the same name. It offers a mostly sativa experience, characterized by its unique tropical aroma and clear, uplifting effects.

EffectsCerebral Clear Elevated Energizing Uplifting
May help withFatigue Stress
AromaCitrusFloralFruityHerbalIncenseLemongrassMangoPineSweet BasilWoody

Appearance

Koh Tao plants exhibit a tall, willowy, and highly photoreactive morphology, common in Southeast Asian sativas. They typically stretch significantly after flowering begins, potentially reaching heights of 2-3 times their initial size. Expect elongated internodal spacing, slender petioles, and narrow leaflets characteristic of the narrow-leaf drug (NLD) type. The inflorescences often develop a foxtailed architecture with abundant resin coverage on finer bract surfaces, contributing to a sparkling appearance.

Aroma & Flavor

The aromatic profile of Koh Tao is dominated by bright, high-toned terpenes, evoking notes of lemongrass, kaffir lime, and tropical fruit. A careful cure can intensify floral and incense-like undertones. On the palate, expect a mirroring of the aroma, with initial impressions of lime zest and lemongrass giving way to sweet tropical fruit, delicate spice, and herbal notes such as basil and mint. The flavor profile evolves throughout a session, with exhales introducing hints of incense and soft wood.

Effects

Koh Tao is known for delivering a clear and long-lasting cerebral experience, consistent with its Southeast Asian sativa heritage. Consumers often report an elevated and uplifting sensation. This strain is anecdotally associated with combating fatigue and alleviating stress, providing a focused and energizing effect.

Terpenes & Cannabinoids

While specific lab data is not provided, the terpene profile of Koh Tao is suggested to be led by terpinolene and ocimene, contributing to its clean, piney, and fruity characteristics. Limonene adds to the tropical and citrus notes, while beta-caryophyllene and alpha-pinene may provide spicy and crisp undertones. The THC content typically ranges from 12-18%, with CBD levels below 1%.

Cultivation

As a landrace-derived strain from a tropical region, Koh Tao thrives in warm, humid conditions with consistent temperatures around 27-29°C and high relative humidity (70-85%). Its photoperiod sensitivity and prolonged flowering times, often 12-16+ weeks, are characteristic of Southeast Asian sativas. Growers should anticipate significant phenotypic variation and may need to provide structural support for its tall, willowy growth. Its foxtailed bud structure offers some resistance to mold in humid environments.

Origins & Lineage

Koh Tao is a landrace-derived population from the island of Koh Tao in the Gulf of Thailand, preserved by The Landrace Team. It represents a narrow-leaf drug (NLD) expression common to southern Thai ecotypes, reflecting a long history of cannabis use in the region. The strain emphasizes authenticity and genetic breadth, offering an experience closer to historical Thai landraces than modern hybrids.

Frequently asked questions

What is the THC and CBD content of Koh Tao?
Koh Tao typically has a THC content ranging from 12-18% and CBD levels below 1%.
What are the dominant aromas and flavors of Koh Tao?
Koh Tao is characterized by bright aromas and flavors of lemongrass, kaffir lime, tropical fruit, with floral and spicy undertones.
What kind of effects can one expect from Koh Tao?
Consumers can expect a clear, elevated, and long-lasting cerebral experience, often described as uplifting and energizing.
Is Koh Tao suitable for beginners to grow?
Due to its landrace origins, extended flowering time, and potential for significant height, Koh Tao may be considered moderately challenging for beginner growers, requiring attention to its specific environmental needs.