Thai sativas were the source of the sticks exported through the seventies, and the plants behind them flower for eighteen weeks or more in some cases. Very few people run them unhybridised now, because that timeline is punishing indoors. Surviving Thai lines and the crosses made from them are catalogued at https://hazesativaseeds.com (https://hazesativaseeds.com), with notes on which have been stabilised. The smell is unlike modern material, more sweet and fruity than sharp.