Purple cannabis seeds

Purple cannabis is not a separate strain but a trait: plants whose buds and leaves turn purple, violet or almost black in the final weeks of flowering. The colour comes from anthocyanins, the same compounds that give blueberries and red cabbage their colour, and is strongest with cool nights at the end of bloom. In this category you will find every strain in our range that naturally turns purple.

Which purple strains do we have?

• Purple Haze: the classic purple sativa, with an uplifting effect and a long bloom.
• Granddaddy Purple and Granddaddy Purple Auto: the American indica that started the purple trend, heavy and sweet.
• Purple Punch and Purple Punch Auto: a Granddaddy Purple x Larry OG that tastes like grape lemonade.
• Purple Queen, Purple Lemonade and Purple Skunk: modern crosses from Royal Queen Seeds and Sensi Seeds.
• Sensi Purple Kush and Purplematic CBD: a purple Kush and a purple CBD strain with little THC.
• Purple Bud as a regular 5-pack from our own line.

How do you get the best colour?

The potential is in the genetics, but the grower decides how much of it shows. A night temperature five to ten degrees below the daytime temperature in the last two to three weeks of bloom switches the colour on. Outdoors that happens by itself in September and October; indoors you lower the night temperature or let the room cool down with the lamp off. A plant that turns purple without cold usually has strongly purple genetics, such as Granddaddy Purple. Purple leaves during warm nights can also be a phosphorus deficiency; check the rest of the plant.

Does purple cannabis taste different?

The colour itself has no taste, but the strains that turn purple often have a sweet, berry-like or grape-like profile, because the genetics come from the same lines. Purple Punch and Granddaddy Purple are the best-known examples. The effect differs per strain: Purple Haze is uplifting, the Granddaddy line relaxing and heavy.

Indoors or outdoors?

Both. Outdoors autumn provides the cool nights that bring out the colour, and you harvest in October. Indoors the autoflower variants are the most practical: they finish in 9 to 10 weeks and you can deliberately drop the temperature in the final weeks.

Is purple cannabis stronger than green?

No. The colour says nothing about the THC content. Check the percentage on the product page; in this category it ranges from almost zero (Purplematic CBD) to above 20 percent.

Does every plant from these seeds turn purple?

With strains like Granddaddy Purple and Purple Punch almost always. With others it depends on the cold in the final weeks of bloom; without cool nights some plants stay green.