How to Apply STS for Feminized Cannabis Seeds

Apply STS when plants are 4-6 weeks into vegetative growth, just as pre-flowers begin to form. This timing ensures maximum effectiveness because the plant's hormonal system is most receptive to sex reversal at this stage.

Gather all necessary equipment before beginning. You'll need:

• Mary J Apothecary STS Spray with CannaCoat technology
• Clean spray applicator (if not using pre-mixed spray)
• Protective nitrile gloves
• Safety goggles
• Well-ventilated workspace

Spray STS solution evenly onto plant leaves and nodes until surfaces are thoroughly coated but not dripping. Focus on:

• All leaf surfaces (top and bottom)
• Node sites where flowers will develop
• Growing tips and new growth areas

Apply the second STS treatment 7-10 days after the first application. This second application ensures complete sex reversal and optimal pollen production.

Use the same application technique as the first treatment, ensuring thorough coverage of all plant surfaces.

Over the next 2-3 weeks, watch for male flowers (pollen sacs) to develop at the nodes. Signs of successful treatment include:

• Small green clusters forming at nodes
• Pollen sacs developing instead of pistils
• Sacs beginning to swell and mature

When pollen sacs open, collect the pollen and use it to pollinate female plants of the same strain to produce feminized seeds.