Ultra Lemon Haze is a modern auto-flowering variety resulting from a cross between Sour Diesel and Auto #1. This cultivar is characterized by its relative ease of cultivation, reaching maturity within a 68-day flowering period. Suitable for both indoor and outdoor environments, the strain is recognized for producing a low yield. Its genetic influence is notable for the creation of its offspring, Kush Doctor.

The sensory profile of Ultra Lemon Haze is driven by a hierarchy of terpenes starting with caryophyllene, humulene, and limonene. Myrcene, bisabolol, and beta-pinene provide the secondary aromatic layers, followed by tertiary notes of linalool, pinene, ocimene, camphene, nerolidol, caryophyllene-oxide, valencene, borneol, and terpinolene. This complex combination of compounds creates a distinct chemical signature that informs the overall aromatic and gustatory experience of the flower.

As a THC-dominant variety, Ultra Lemon Haze is specifically utilized by consumers to address symptoms of stress, pain, and sleep difficulties. Users typically report a subjective state of being relaxed, happy, and uplifted following consumption. The strain serves as a functional choice for those seeking these specific therapeutic outcomes, anchored by a stable genetic foundation that has contributed to its role in further breeding programs.