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Claustrum feminized seeds

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The Claustrum feminized cannabis strain displays the best of Sativa genes with 21% THC levels providing highly psychedelic effects that stimulate your mind with euphoric thoughts! Cedar aromas plus fresh, piney flavors coming from about 600 g of buds per sq. m that only take up to 75 days to ripen.

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Positronics Seeds
Outdoor Indoor
All characteristics

Claustrum: Huge Trees Dripping with Resin

The Claustrum feminized cannabis seeds grow into Sativa plants taking up to 11 weeks to produce their large, resinous flower. These have a piney flavor with church-like smells. Yields from 500-600 g and THC levels up to 21%! Not ideal for small spaces or novice consumers!

By crossing Kali Mist X Super Silver Haze X Jack Herer, Positronics has elaborated a resilient strain that produces plants that can grow up to 5 m tall, with Christmas tree structure. Indoor growers must ensure a growing space with at least 1.5 m of vertical space. Beginner growers with enough space will be able to learn about Sativa genes and cloning with this easy to grow strain that has long internodal spacing.

This wonderful cultivar takes 65-75 days to finish forming its buds. Indoor yields are around 500 g/m2. Outdoor yields increase up to 600 g/plant and should be ready by the first week of November.

  • Indoor light per m2: 400-600 Watts (HID), 240-300 Watts (High Efficiency LEDs);
  • 1.0-1.4 EC during vegetation; 1.5-1.8 EC during flowering;
  • Excellent for SCROG and SOG;
  • Flowers might need support.

Exotic aromatic profile

Superb aromatic profile that includes cedar, spices, and incense, resulting in fresh flavors that remind of eucalyptus trees. The 21% THC and 0.1% CBD levels provide euphoric highs that might make some hallucinate. Better go easy on these herbs!


  • Brand Positronics Seeds
  • Sex Feminized
  • Flowering type Photoperiod
  • Suitable for Outdoor
  • Suitable for Indoor

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