Here at ACE Seeds we’ve done it again with Killer A5 Haze, creating a monstrous new sativa hybrid that has the potential to produce the most potent plants, with the highest amount of THC in our catalogue.

A5 Haze is one of the rarest mothers (and probably the most powerful one) belonging to the family of Dutch elite clones of Haze hybrids that Nevil Schoenmakers developed at the end of the 80s and that are still preserved to this day. This Northern Lights #5/Haze A mother is characterised by its extremely trippy and devastating potency, high production and by its incensed, organic and meaty aromas of authentic Dutch 'Old School' Haze with a greater influence from ancient Colombian sativas. The rarity of this A5 Haze mother is due to Nevil losing the Haze A male very early on, meaning that seeds were never produced in commercial quantities using this Haze A male.

With Killer A5 Haze our main goal was to create a sativa dominant hybrid that would maintain (and even exceed) the extreme potency, high vigour and high yields of the A5 mother, and we have achieved this by hybridising her with the killer phenotypes of our powerful Malawi, with which we have increased the THC content even further, reaching as high as 30% (the upper limit that cannabis plants can produce). At the same time we have considerably increased resin production and trichome size, and we have reduced the long flowering time of the A5 Haze to something more moderate (not only indoors, but also in its faster reaction to flowering outdoors) without having to introduce indica genetics. Despite its great sativa vigour and its very high production, Killer A5 Haze grows with a contained and manageable size, making it our sativa dominant hybrid with the highest production per m2.

In Killer A5 Haze we find 4 phenotypes:

- Haze dominant pheno: This phenotype is the one that shows the greatest Colombian sativa influence from the Haze A male, producing huge and beautiful colas with an excellent flower/leaf ratio, which mature with elegant and delicate reflowerings. Woody and incensed aromas of pure Haze. The resin production of this pheno is good, but not as extreme as in the following 3 phenotypes. Flowering time: 75-90 days.

- NL/Haze pheno: This pheno shows a greater indica influence from the Northern Lights, and therefore a smaller size, faster flowering and lower flower/leaf ratio. It is also the most faithful to the characteristics of the original A5 Haze mother, producing rounded and very resinous flowers with a silver appearance, which produces characteristic horn-shaped reflowerings at the end of flowering. Incensed, meaty (liver) and organic (petals of decaying flowers) aromas. Flowering time: 66-80 days.

- Haze/Malawi pheno: Sativa dominant and well balanced pheno in terms of displaying characteristics from both Haze A and Malawi parents. It produces huge, very dense colas, with an excellent flower/leaf ratio, with the gleaming resin coverage of our Malawi. It produces slight reflowerings in its final stages, although not as pronounced as in the first 2 phenos. Incense and woody Haze aromas, with the oily and resinous background of Malawi. Flowering time: 75-85 days.

- Silverish Malawi pheno: Monstrous sativa phenotype with a greater Malawi influence. Incredibly high flower to leaf ratio, very high production, with the classic huge trichomes and ovaries of our Malawi, and with a prodigious resin production that lends it an aggressive silverish appearance when mature, bringing the characteristics of Malawi Killer phenotypes to very extreme levels that have rarely been reached before. Flowering time: 75-85 days.

With these new projects, our priority will be to try to raise the bar of Sativa Haze breeding, by crossing these old elite Dutch Haze clones with elite parentals of our most worked sativa varieties, and also in organoleptic terms, experimenting with different types of incense profiles by hybridising elite parents in this regard.

We’d especially like to thank Karma for rescuing the A5 Haze mother, and for offering it to us for the development of Killer A5 Haze.