4.7 on Reviews.io -
4.7 on Reviews.io -
Since 2010!
15 Years of World Wide Stealthy Delivery!
Seed City Header Logo

Killer A5 Haze

(2 customer reviews)

Quick Breakdown

Potent sativa hybrid with up to 30% THC. High yields, intense aromas, and powerful psychedelic effect. For experienced users.

Characteristics

Stock Availability

Seed Type

,

Flowering Period Type

Indica / Sativa

Strain Type

, , , , , ,

Strength

Environment

, ,

Indoor Flowering Time

Outdoor Harvest Time

,

Yield

Smell / Taste

Medical Strains

, ,

Description

Introduction

ACE Seeds presents Killer A5 Haze, a sativa-dominant hybrid boasting possibly the highest THC levels in their catalogue. This rare A5 Haze mother, developed by Nevil Schoenmakers in the late 80s, combines potent, trippy effects with high yield and distinctive Dutch ‘Old School’ Haze aromas, enriched by Colombian sativa influences. By crossing A5 Haze with Malawi killer phenotypes, the resulting Killer A5 Haze not only surpasses the mother’s potency, with THC reaching up to 30%, but also improves on resin production and flowering times without introducing indica genetics, offering the highest production per m^2 among their sativas.

Killer A5 Haze Phenotypes

  • Haze Dominant: Reflects Colombian sativa heritage with excellent flower/leaf ratio, woody and incensed Haze aromas. Flowering time: 75-90 days.
  • NL/Haze Pheno: Shows indica traits from Northern Lights, with rounded, resinous flowers and meaty, organic aromas. Flowering time: 66-80 days.
  • Haze/Malawi Pheno: A balanced mix of Haze A and Malawi traits, dense colas, incense and woody Haze aromas. Flowering time: 75-85 days.
  • Silverish Malawi Pheno: Monstrous sativa with high production, aggressive silverish appearance, and extreme resin production. Flowering time: 75-85 days.

Karma’s efforts in preserving the A5 Haze mother have enabled the creation of Killer A5 Haze. The target with this and future projects is to elevate Sativa Haze breeding standards through meticulous hybridization processes, focusing on old elite Dutch Haze clones and refined sativa varieties, aiming for unique incense profiles.

Strain Summary

  • Tipo: POLY HYBRID
  • Format: Feminized
  • Sativa / Indica ratio: 80 % sativa / 20 % indica
  • THC: 23-30 %
  • CBD: Null
  • CBG: 0.3 %
  • Flowering indoors: 9-12 weeks
  • Flowering outdoors: End of October / Early November
  • Yield: Very High
  • Resistance against spider mites: Average-High
  • Resistance against powder mildew: High
  • Resistance against botrytis: Average
  • Resistance against white fly: Average-High
  • Resistance against cold: Average-High
  • Resistance against heat: High
  • Latitude: 0º-43º
  • Genetics: A5 Haze by Nevil (Northern Lights #5/HazeA) x Malawi Killer.
  • Structure: Excellent vigour. Branched sativa structure with medium internode distance, of a contained and manageable size and stretch.
  • Bouquet: Dutch old school dark incensed Haze aroma, meaty (liver), with a strong organic/rotten background, with final touches of decomposing flower petals, resin and cured wood.
  • High: Extraordinarily powerful, complex, profound and long lasting. Psychedelic beginning that completely changes visual, auditory and tactile perception, catapulting the psyche to new dimensions where there seems to be no tangible reality. As the effect develops, it produces an uncontrollable hilarity, later becoming more introspective and physical, producing strong dissociation of mind and body, and a strong final narcosis similar to opiates. Recommended only for the most intrepid and experienced psychonauts. It can cause panic and/or complete physical debilitation to users with low tolerance or without experience with strong sativas of this caliber. Nothing will be ever the same after trying Killer A5 Haze.
  • Terpene profile: It mainly contains the following monoterpenes: high amounts of beta myrcene and smaller amounts of limonene. Sesquiterpenes: Only beta caryophyllene.
  • Growing Tips: Indoors, outstanding results can be achieved in terms of quality and production with a correct and abundant feeding and strong light intensity. Very suitable for SOG crops due to its great yield in the main cola, or for SCROG, horizontal or network growing due to its excellent yield in the lateral branches and its vigorous reaction to pruning. Outdoors, it can be cultivated up to 43º latitude, although it is a variety that works best in climates with hot summers and warm, dry autumn weather, due to the density and size that its flowers can reach. The breeder recommends high levels of nutrients for the whole cycle.

Customer Reviews

2 reviews for Killer A5 Haze

  1. robert arblaster (verified owner)

    This company always delivers. The BEST AND HONEST

  2. 引 消 (verified owner)

    非常棒!我还会继续购买!

Add a review

From £40.60

Similar Strains to this one

Seed City Footer Skyline
Seed City Footer Logo
Seed City is the best source of cannabis seeds online! Over 6,000 strains from the top breeders worldwide; filtered by over 100 types and at the lowest prices you'll find!
All seeds sold are strictly considered for souvenir, collection and/or preservation purposes only, to preserve valuable genetics in case the laws change. Seed City does not want to induce anyone to act in conflict with the law and cannot be held responsible for those who do.
Seed City © 2026 All Rights Reserved.