Stakes and ties for the side branches, generous root space, permanent ventilation: what breeders write about growing Purple Haze fits a vigorous sativa from the Haze line. Behind the name, however, there is no single, uniform plant, but a series of versions with different lineages, different seed types and widely diverging flowering-time figures.
Cultivation:
Positronics describes medium-thick stems, large, thinly serrated leaves and a Christmas-tree or candelabra-like branching pattern with wide internodes for its selection. The breeder recommends plenty of water, ample root space and permanent ventilation, early flowering initiation indoors, and outdoors sowing not before June or July so growth does not get out of hand. It does not consider the plants suitable for balconies or terraces.
For outdoor cultivation, Sensi Seeds names a warm, sunny climate of Mediterranean character. According to G13 Labs, the coloring that gives the strain its name only appears at low temperatures toward the end of flowering: leaves and calyxes then shift from dark green to lavender or purple, occasionally toward blue. Strain descriptions rate the cultivation as undemanding.
Versions from Different Breeders:
ACE Seeds lists Purple Haze as a selection of purple and reddish phenotypes from its own Oldtimer's Haze population, as a 100 % sativa from Mexican, Colombian, South Indian and Thai lines, sold exclusively as regular seeds, with a flowering time of 16 to 20 weeks and a medium to low yield.
The feminized versions turn out noticeably shorter. White Label states 50 to 65 days, a height of 110 to 150 cm and around 100 g per plant, with 80 % sativa and 20 % indica from Purple Thai and a Haze line. For its cross of Afghan and Haze, G13 Labs names 65 to 70 days, 18 % THC, 500 to 600 g/m² indoors and 700 g per plant outdoors, with harvest there from mid to late October. Positronics puts Purple Haze #1 at 70 days of flowering, 400 g/m² indoors, 350 g per plant outdoors, 22 % THC and 0.2 % CBD. ILGM states 9 weeks of flowering, 17 to 20 % THC and 0.1 % CBD. With Purple Haze Auto, Original Sensible Seeds offers an autoflowering cross with ruderalis that is ready for harvest after around 40 days of flowering and 70 to 75 days from sowing; outdoors, plants between 100 and 150 cm have been documented, with the phenotypes varying.
Genetics and Origin:
Purple Thai and Haze are usually named as the parents. This is not documented in a reliable way. One strain database simply classifies Purple Haze as a purple phenotype of the Haze line, which traces back to Santa Marta Gold, Wacky Weed and other Colombian sativas, and notes that the original plant was never sold as seed.
Several accounts circulate about its origin. A 2020 account places it in the 1970s in Santa Cruz, California, and attributes it to the Haze Brothers and Sam 'the Skunkman,' though it describes the tradition itself as hearsay. A 2026 publication names DJ Short instead and stresses that the plant traded under the name today is not identical to the one from the 1960s. The name comes from Jimi Hendrix's 1967 song, not the other way around.
Aroma and Flavor:
Descriptions mention sweet, earthy berry notes with grape and a sharp spicy component, along with floral hints named as violet or lavender. Sensi Seeds describes the scent of the growing plant as sweet and pungent, becoming earthier and more penetrating with a berry component after drying. G13 Labs describes its aroma differently, as fresh, woodsy, earthy, musky and woody with a metallic touch, while at ACE Seeds the profile is darker, with black licorice and wild blackberry alongside wood, spice and incense. Myrcene is named as the dominant terpene, followed by caryophyllene and limonene.
Effects:
User reports and strain descriptions describe a cerebral, alert effect with euphoria, uplifted mood, talkativeness, drive and increased creativity, without pronounced physical heaviness. Sensi Seeds attributes a light relaxing undertone to the indica portion. Side effects named include dry mouth, dry eyes, dizziness, headache and paranoid reactions.
THC and CBD Content:
Breeder figures range from 18 % at G13 Labs, 17 to 20 % at ILGM, to 22 % at Positronics. ILGM puts CBD at 0.1 %, Positronics at 0.2 %. Strain descriptions set the range lower, at 14 to 19 %.
Community Experiences:
Grow reports paint an inconsistent picture. In an indoor grow from 2016, the plants turned out wide and bushy, with small, very sticky flower clusters; the grower expected around 70 days of flowering. Another documented run ended after 135 days from germination to harvest with a dry weight of 368.54 g per plant. There, the plant had been topped above the fourth node, defoliated and trained through two SCROG net levels; the flower clusters stayed long and rather slender, but were easy to trim thanks to the small, resin-covered leaves.
In this run, the smell was described as sweet and citrusy with a candy note, and the taste as citrus, cream and sourness. In other reports too, the plants tolerated topping without noticeable setbacks.