Basic Diesel / D39

Cannabis Strain by Reservoir Seeds

Introduction
D39 — a designation that reads like a warehouse inventory number — suggests this strain began its life as a numbered selection in a larger breeding program, eventually stabilised and released under the dual name Basic Diesel / D39. Reservoir Seeds keeps things workmanlike.

Lineage
**Genetic Lineage** Basic Diesel / D39 comes from Reservoir Seeds, a breeder whose name evokes genetic storage and preservation — appropriate for a strain with diesel in its lineage. Diesel genetics trace back to the Chemdog (also spelled Chemdawg) family and the original NYC Diesel / Sour Diesel cluster — strains that emerged in the northeastern United States in the 1990s from uncertain but much-speculated-upon origins, possibly involving Hindu Kush or Nepalese genetics crossed with early hybrid lines. The strain is classified as mostly sativa with a 65-day flowering period, consistent with diesel-family genetics that typically lean sativa in structure and effect.

Terpenes
**Terpene Profile** Diesel-family genetics produce some of the most recognisable terpene signatures in cannabis: sharp, petroleum-adjacent aromatics driven by high caryophyllene, myrcene, and limonene concentrations, with ocimene contributing a faintly sweet, herbaceous counterpoint. The "basic" qualifier in the name may suggest a less complex expression than ornate modern diesel crosses — a foundational, clean diesel character rather than layered embellishment. This terpene family is polarising but has a dedicated following who prize its intensity.

Growth
**Growth Characteristics** At 65 days, Basic Diesel / D39 sits within the expected range for mostly sativa diesel genetics. Plants likely exhibit the elongated, open-canopied structure typical of diesel-family varieties. Regular seed format. No specific yield data is available, though diesel-family strains are generally moderate yielders that prioritise quality over bulk.

Effects
**Reported Effects & Experience** Diesel-family strains are well-documented for producing energetic, uplifting, and cerebral effects — a clear-headed stimulation that users often describe as focusing and mood-lifting. Physical effects are typically secondary to the mental engagement. Onset is quick; effects may last two to three hours.

Documentation
**Medical Applications** Diesel-lineage varieties have been reported for fatigue, mood difficulties, and focus-related applications.

⚠️ This information is for educational purposes only and should not be considered medical advice.

Sources: http://www.icmag.com/ic/forumdisplay.php?f=65552, https://en.seedfinder.eu/strain-info/Basic_Diesel_and_D39/