M39
Northern Lights #5 × Skunk #1
M39, a classic Canadian cultivar from the 1990s, is an indica-leaning hybrid recognized for its rapid flowering, substantial yields, and distinct skunky aroma. It is widely considered a selection derived from the Northern Lights #5 and Skunk #1 cross.
Appearance
M39 plants are typically medium-short, reaching about 80-120 cm indoors with minimal training. They feature tight internodes, broad leaves, and form a uniform canopy. The flowers develop into dense, rounded colas with thick calyxes that swell significantly. A notable characteristic is the large, skunk-like calyx development, resulting in chunky, high-density buds with generous trichome coverage.
Aroma & Flavor
The aroma of M39 is predominantly skunky, earthy, and woody, with subtle undertones of pine and citrus. When the flower is broken apart, the scent intensifies, sometimes described as sharp or ammonia-like. The flavor profile leans towards earthy wood, cured cedar, and a peppery spice, with potential brighter notes of lemon peel or pine resin, especially after a proper cure.
Effects
M39 delivers a body-forward physical sensation, accompanied by a steady, functional headspace at lower doses. In larger quantities or when consumed at night, it can lead to a more pronounced couchlock effect. The experience is generally straightforward, offering relaxation without excessive sedation in lighter amounts.
Terpenes & Cannabinoids
Modern analysis typically shows M39 with THC levels ranging from 14% to 18%, though some batches can reach up to 20%. CBD content is generally below 0.3%. The terpene profile commonly includes Myrcene, Limonene, Caryophyllene, Pinene, and Humulene, contributing to its complex aroma and flavor.
Growing
M39 is known for its fast flowering time, typically completing its bloom cycle in 45–55 days. It produces heavy yields and has a compact structure, making it well-suited for indoor cultivation, particularly methods like Sea of Green (SOG). The dense flowers require attention to airflow and humidity control to prevent issues like botrytis.
Origins & Lineage
M39 is most frequently described as a hybrid resulting from the cross of Northern Lights #5 and Skunk #1. This pairing combines the indica-leaning, resinous qualities of Northern Lights #5 with the vigor and strong aroma of Skunk #1. It emerged as a selection optimized for reduced flowering time and high yields in indoor environments.