Chocolate thai is often a confused term. There is 2 known types of chocolate thai, there is the 70's 100% sativa from thailand that DJ short and the old timers talk about, then there is Dutchflowers "chocolate thai" which if you read the description of the seeds they used to sell they were made mystery genetics. I think almost everything sold as choc thai is probably from dutch flowers version.
Dutch Flowers - Chocolate Thai
We obtained Chocolate Thai from growers in Hawaii (who also sourced our Lemon Thai, already offered here). The Chocolate Thai had a classically thunderous, soaring high that immediately won everyone's preference. Unfortunately, the superb quality came with a 14 week flowering period price tag. The buds were incredibly aromatic and resin coated, but very spindly, with strings venturing on their own out of the thin main floral cluster, giving it an overall skimpy braided look. Curious structure, definitely landrace looking, but hardly productive even outdoors. Our Chocolate Thai source had warned that to obtain a reasonable yield outdoors, his method was to crowd many plants in a limited space outdoors, in a style reminiscent of hemp grown for fiber.