The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 0204Hybrid

A5

Northern Lights #5 × Haze A

A5 is a highly regarded Dutch Haze clone originating in the late 1980s and early 1990s. It is a hybrid that traces its lineage to Nevil Schoenmakers' experimental Haze A male crossed with Northern Lights #5, creating a potent and influential strain.

AromaIncenseWoodySpicyHerbalCedarPepper

Appearance

A5 grows tall and vine-like, characteristic of its sativa heritage, with narrow leaflets and long internodes. It exhibits prolific branching and develops elongated, foxtail-shaped buds densely covered in trichomes. While typically green, some phenotypes may show muted purples or bruise-like hues in cooler temperatures.

Aroma & Flavor

The aroma of A5 is predominantly described as "church incense," featuring notes of cedar, frankincense, and peppery spice over dry, herbal wood. Secondary notes can include bay leaf, coriander, old leather, and sometimes a faint citrus peel or metallic edge. The flavor profile mirrors the aroma, offering a complex blend of woody, spicy, and herbal notes.

Effects

A5 is known for delivering a potent, cerebral, and energetic experience that is often described as uplifting. It combines the soaring headspace of classic Haze with a weighty, modern punch, promoting creativity and sustained mental activity. Sensitive users may experience anxiety or dizziness.

Terpenes & Cannabinoids

With THC levels reported around 25% and CBD below 1%, A5 is a high-potency strain. Its terpene profile is characterized by Caryophyllene, Humulene, and Terpinolene, contributing to its distinctive spicy, woody, and peppery aroma and effects.

Origins & Lineage

A5 Haze is a clone-only hybrid developed by Nevil Schoenmakers, stemming from a Northern Lights #5 mother pollinated by the "Haze A" male. It is considered a foundational strain in European cannabis breeding, influencing hybrids like Barney's Farm Tangerine Dream. Its sibling is the C5 line, which utilized the "Haze C" male.

Growing

Cultivating A5 presents challenges due to its tall, stretching growth habit and long flowering time, demanding significant grower attention. Indoor growers must manage its vigorous vertical growth with early training and support structures like trellising. Proper airflow and humidity control are crucial, especially late in bloom, to prevent issues with its resinous, foxtail bud structure.

Frequently asked questions

What is the origin of the A5 strain?
A5 is a Dutch clone developed in the late 1980s/early 1990s by Nevil Schoenmakers, resulting from a cross between Northern Lights #5 and his Haze A male.
What are the primary effects of A5?
A5 is known for its cerebral, energetic, and uplifting effects, promoting creativity and a soaring headspace, often described as a potent sativa experience.
What is the typical THC content of A5?
A5 typically tests around 25% THC, making it a high-potency strain.
What makes A5 challenging to grow?
A5 is challenging due to its tall, stretching growth, long flowering period, and the need for careful environmental control to manage its dense, resinous buds and prevent issues.