Chem 91 Auto is a modern autoflowering variety derived directly from Chemdogging. Engineered for convenience, this cultivar is characterized by an 85-day flowering cycle and is suitable for cultivation in both indoor and outdoor environments. Despite its accessibility and low difficulty level for growers, it is noted for a low yield. Its genetic influence is evident in several notable offspring, including Chem n Qoolaid, 91 Berries Auto, and 91 Grapes.

The terpene profile of this strain is complex and hierarchical, led by dominant myrcene, followed by caryophyllene, limonene, pinene, and terpinolene. The secondary tier consists of linalool, beta-pinene, and humulene, while its trace profile includes nerolidol, ocimene, bisabolol, guaiol, camphene, caryophyllene-oxide, and p-cymene. This specific arrangement of aromatic compounds defines the sensory profile of the plant, creating a functional bouquet that bridges its diverse chemical base.

As a THC-dominant variety, Chem 91 Auto reliably induces effects described as relaxed, happy, and uplifted. These characteristics make it a functional choice for users seeking relief from stress and pain, or aid for sleep purposes. Its reputation is supported by its consistent legacy as a parent strain for various modern hybrid crosses, ensuring its impact on the market persists through its documented lineage.