Claustrum Feminized Seeds
Claustrum Feminized Seeds combine the legendary genetics of Kalimist × Super Silver Haze × Jack Herer to create a vigorous 100% Sativa photoperiod cultivar prized for its energetic growth, impressive harvest potential, and dense resin-covered flowers. According to the supplied specifications, this medium-sized variety performs exceptionally well indoors and outdoors while producing frosty buds with excellent visual appeal.
Its pure Sativa lineage develops sturdy branching capable of supporting long, resin-rich flowers throughout the flowering cycle. As harvest approaches, the buds become heavily coated with shimmering trichomes while releasing a sweet, fruity aroma that intensifies during the final weeks of bloom.
According to the supplied specifications, Claustrum contains approximately 21% THC with 0% CBD. Its proven Haze-based heritage, strong production potential, and dependable cultivation characteristics make it an excellent choice for growers seeking premium Sativa photoperiod cannabis seeds.
🌿 CLAUSTRUM AT A GLANCE
THC Potential: Approximately 21%
CBD Content: 0%
Variety: 100% Sativa
Seed Type: Feminized
Flowering Type: Photoperiod
Genetics: Kalimist × Super Silver Haze × Jack Herer
Seed Bank: Seedsman
Flowering Time: 9–10 Weeks
Environment: Indoor / Outdoor
Flavor Profile: Fruity • SweetTHC, CBD, flowering time, aroma, plant size, and final yields may vary depending on phenotype and growing conditions.
Why Grow Claustrum?
Claustrum combines classic Haze genetics with outstanding production potential and dependable cultivation.
🌿 Legendary Sativa Lineage
Three renowned parent strains combine to deliver vigorous growth, healthy branching, and consistent flower production.
❄️ Heavy Resin Production
Long flowers become densely coated with frosty trichomes throughout bloom, creating exceptional visual appeal at harvest.
🌾 Excellent Harvest Potential
Indoor growers may harvest approximately 450 g/m², while outdoor plants can produce up to 600 grams per plant under favorable growing conditions.
☀️ Adaptable Growing Performance
Its medium-sized structure performs well in grow tents, greenhouses, indoor gardens, and outdoor cultivation while responding well to modern plant training techniques.
Is Claustrum Right for Your Grow?
Claustrum is an excellent choice for growers looking for premium Sativa genetics with dependable harvests, healthy vigor, and impressive resin production. Its balanced plant structure makes it manageable for indoor cultivation while still producing substantial outdoor yields under favorable conditions.
The plant responds particularly well to topping, low-stress training (LST), SCROG, and selective defoliation. These techniques improve canopy development, maximize light penetration, strengthen lateral branching, and encourage more even flower production across the plant.
If you’re looking for a productive photoperiod cultivar with proven Haze lineage, generous harvests, and reliable cultivation characteristics, Claustrum is an outstanding addition to both indoor and outdoor gardens.
Claustrum Genetics and Plant Characteristics
Claustrum combines Kalimist, Super Silver Haze, and Jack Herer, creating a vigorous Sativa cultivar recognized for healthy branching, abundant resin production, and excellent flower development.
Its legendary parentage contributes strong plant vigor, open branching, and dependable flowering performance. Together these genetics produce medium-sized plants capable of supporting numerous elongated flowering sites while maintaining excellent structural strength throughout the growing cycle.
Plants develop strong stems and healthy lateral branches that comfortably support dense, resin-rich flowers during bloom. As harvest approaches, the buds become increasingly frosted while producing a naturally sweet, fruity aroma.
Its adaptable growth habit performs consistently in soil, coco, and hydroponic systems while thriving in both indoor and outdoor cultivation.
🧬 GENETIC PROFILE
Kalimist × Super Silver Haze × Jack Herer
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100% Sativa
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Feminized • Photoperiod
Growing Claustrum Feminized Seeds
Claustrum performs well in soil, coco, and hydroponic systems while adapting easily to both indoor and outdoor cultivation. Stable temperatures, quality lighting, and consistent airflow encourage vigorous vegetative growth and healthy flower development throughout the growing cycle.
Balanced nutrition supports strong development from seedling through flowering. During vegetative growth, adequate nitrogen promotes vigorous branching, while bloom-focused nutrients encourage dense flower production, healthy resin formation, and consistent harvest quality.
This cultivar responds particularly well to topping, low-stress training (LST), SCROG, and light defoliation. These cultivation techniques improve canopy structure, maximize light penetration, encourage more uniform flower development, and maintain healthy airflow throughout the canopy.
Allow the growing medium to partially dry between irrigations to encourage healthy root development, and maintain good ventilation during flowering to help dense buds mature with excellent quality and abundant resin production.
Flowering Time, Height, and Yield
Claustrum flowers in approximately 9–10 weeks, allowing plenty of time for its Sativa genetics to develop long, resin-rich flowers with excellent structure and density. During the final weeks of bloom, the buds continue to swell while producing thick layers of frosty trichomes and a naturally sweet, fruity aroma.
Plants generally finish around 3–4 feet tall according to the supplied specifications, making Claustrum well suited for grow tents, indoor gardens, greenhouses, and outdoor cultivation. Its vigorous Sativa growth responds exceptionally well to topping, low-stress training (LST), SCROG, and light defoliation, helping growers improve canopy management, increase light penetration, and promote even flower development across the plant.
Indoor growers can expect harvests of approximately 450 g/m², while outdoor plants may produce up to 600 grams per plant under favorable growing conditions. Final yields will vary depending on lighting intensity, growing medium, nutrient program, irrigation practices, training methods, climate, and overall plant health.
🌱 GROW PROFILE
Difficulty: Intermediate
Flowering Period: 9–10 Weeks
Expected Height: Medium, Approximately 3–4 Feet
Environment: Indoor / Outdoor
Growth Habit: Vigorous Sativa with Strong Branching
Recommended Training: Topping • LST • SCROG • Light Defoliation
How Potent Is Claustrum?
Claustrum contains approximately 21% THC with 0% CBD, placing it among the higher-potency cultivars in the collection. Its cannabinoid profile, combined with legendary Haze genetics and abundant resin production, makes it an excellent choice for growers seeking premium Sativa photoperiod cannabis seeds.
Actual cannabinoid levels may vary depending on phenotype, cultivation methods, harvest timing, drying, curing, and laboratory testing.
Flavor, Aroma, and Terpenes
Claustrum delivers a clean, vibrant flavor profile that emphasizes natural sweetness and fruit.
🍓 Fruity — bright fruit notes provide a refreshing and flavorful character throughout each inhale.
🍬 Sweet — natural sweetness balances the profile with a smooth, pleasant finish.
A verified laboratory terpene analysis was not provided. Testing would be required to identify the dominant terpene compounds accurately.
Reported Effects
Claustrum is commonly associated with an uplifting experience that gradually transitions into a calm and relaxing finish.
Consumers commonly report an initial sense of euphoria accompanied by enhanced creativity and improved focus. As the experience develops, calming relaxation becomes more noticeable before settling into a more sedative finish later on. Its balanced progression makes it a versatile cultivar for experienced consumers.
Individual experiences vary according to serving size, tolerance, cannabinoid content, body chemistry, and phenotype.
⚡ COMMONLY REPORTED PROFILE
Relaxation • Calming • Creative • Focused • Euphoric • Sedative
Reported effects are based on consumer experiences and should not be interpreted as medical claims or guaranteed outcomes.
Who Should Choose Claustrum?
Claustrum is an excellent choice for growers looking for premium Sativa genetics, generous harvests, and dependable flower production from classic Haze lineage.
This cultivar may be a good fit if you are looking for:
- Kalimist × Super Silver Haze × Jack Herer genetics
- Approximately 21% THC
- Sweet, fruity flavors
- Medium-height plants that are easy to manage
- Dense, trichome-rich flowers
- Indoor or outdoor cultivation
- Indoor yields up to approximately 450 g/m²
- Outdoor harvests up to approximately 600 grams per plant
- A productive 100% Sativa photoperiod cultivar with legendary breeding heritage
FREQUENTLY ASKED QUESTIONS
Claustrum is generally better suited to growers with some cultivation experience, although attentive beginners can also achieve excellent results by maintaining stable growing conditions.
Yes. Topping, low-stress training (LST), SCROG, and light defoliation help improve canopy structure, increase light penetration, and encourage more consistent flower development.
According to the supplied specifications, plants generally reach approximately 3–4 feet, making them manageable for most indoor cultivation spaces.
Yes. Under favorable outdoor conditions, plants can produce approximately 600 grams per plant while maintaining dense, resin-rich flowers.
Claustrum offers a simple but enjoyable combination of sweet and fruity flavors that remains smooth throughout the experience.
Its combination of Kalimist, Super Silver Haze, and Jack Herer genetics, approximately 21% THC, strong outdoor production, and classic Sativa characteristics makes Claustrum an excellent choice for growers seeking dependable photoperiod cannabis seeds.



Carol N –
The Claustrum feminized weed variety from The Seed Fair has some of the most beautiful, unique, and huge buds. I got a generous yield from the few crops I planted.