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Purple Strains Cannabis Seeds
Purple strains are cannabis varieties that turn shades of violet, deep blue, or near-black as they ripen, instead of finishing the usual green. The color comes from anthocyanin pigments that become visible when genetics and cooler late-flower temperatures work together. Beyond the striking look, many purple lineages — Granddaddy Purple and Blackberry types among them — carry sweet berry or grape flavors. Growers choose them for bag appeal and for buds that photograph as well as they smoke. This category gathers the purple and dark-hued strains in our catalog.
9 Strains Available6 Hybrid2 Indica1 Indica-dominant Hybrid
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5/20/2026
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5/20/2026
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All Purple Strains Seeds
9 strains
Hybrid
Black Ice
Black Ice
THC: 17-21%
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Hybrid
Blackberry Kush
Blackberry Kush
THC:
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Hybrid
Grand Daddy Purp
Grand Daddy Purp
THC: 16-19%
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Indica
Granddaddy Purple
Granddaddy Purple
THC: 17-23%
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Hybrid
Granddaddy Purple Autoflower
Granddaddy Purple Autoflower
THC:
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Indica
Purple Kush
Purple Kush
THC: 17-22%
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Hybrid
Purple Kush Autoflower
Purple Kush Autoflower
THC:
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Hybrid
Purple Punch Autoflower
Purple Punch Autoflower
THC:
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Indica-dominant Hybrid
Purple Starfruit
Purple Starfruit
THC: 20-22%
View DetailsAbout Purple Strains Cannabis Seeds
Why Some Strains Turn Purple
Purple coloration is caused by anthocyanins, the same pigment family behind blueberries and red cabbage. A strain must carry the genetic potential for it, and cooler nighttime temperatures in late flower help the color express fully.
Why Growers Choose Purple Strains
Visual Appeal. Deep purple buds stand out on any shelf or in any photo.
Flavor Pairing. Many purple lineages bring sweet grape and berry notes.
Novelty. A purple plant adds variety and interest to a mixed garden.
Bringing Out the Color
Color is genetics first. Where a strain carries the trait, a modest drop in night temperature during the final weeks of bloom encourages the richest purple tones.