STS Solutions
Professional silver thiosulfate solutions with sticky CannaCoat for feminized seed production and advanced breeding techniques.
What is Silver Thiosulfate?
Silver Thiosulfate (STS) is a chemical compound used in advanced plant breeding, particularly for cannabis and hemp cultivation. STS acts as an ethylene inhibitor, suppressing ethylene production in plants. Since ethylene functions as the primary hormone controlling female flower development, blocking it induces male flower formation on genetically female plants. This controlled sex reversal enables breeders to produce feminized seeds without introducing male genetics into their breeding programs.
Scientific Research & Effectiveness
Peer-reviewed research published in leading horticultural journals confirms that Silver Thiosulfate is the most effective compound for inducing sex reversal and feminizing seeds in high-THC cannabis cultivars. Studies demonstrate that STS applications achieve up to 91% conversion rates of female flowers to male flowers, with higher concentrations (3 mM) producing more complete masculinization than lower doses (0.3 mM). The degree of masculinization is directly proportional to the concentration applied, allowing breeders to fine-tune their results based on specific breeding objectives.
Benefits for Professional Breeders
Feminized Seed Production
Produce 100% female seeds by crossing reversed female plants with other females, eliminating male plants from your cultivation operation.
Genetic Preservation
Preserve rare and valuable genetics by creating feminized seeds from elite mother plants without requiring male specimens.
Breeding Control
Maintain complete control over breeding programs without the unpredictability of male plants or hermaphroditic tendencies.
Proven Consistency
Achieve repeatable, reliable results with properly formulated STS solutions backed by scientific research.
Application Guidelines
STS solutions are applied as foliar sprays to female plants during the vegetative stage or early flowering transition. Professional application involves spraying plants until runoff, typically every 5 days during the treatment period. The solution should be applied under low lighting conditions, as silver thiosulfate is light-sensitive. Treated plants will begin developing male flowers within 2-3 weeks, producing viable pollen for feminized seed production. For optimal results, applications should be timed with photoperiod changes to induce flowering.
Safety & Compliance
Mary J Apothecary STS Solutions are formulated for professional horticultural use. Always follow label directions and safety guidelines. Products are intended for breeding and seed production purposes only. Treated plants should not be consumed and should be clearly labeled and separated from production plants. Proper protective equipment should be worn during application, including gloves and eye protection.