Colloidal Silver inhibits the ethylene production needed by the plant to produce female flowers; In turn forcing the female plant to produce male pollen sacs. Because female plants having zero male chromosomes the pollen produced is female, resulting in 99.99% guaranteed female seeds when using the pollen from the plant that was treated with colloidal silver.
Plants become hermaphrodites due to environmental factors such as stress and are known as Bisexual Plants. This happens on the female plant when it begins to detect factors that can induce stress, it then begins to produce stamen along the pistils. By doing this, the plant shortens its flowering time, ensuring that it is more likely to pass its genes to its offspring. Several environmental factors can cause your plants to turn hermaphroditic. Most are caused by negligence and can be easily avoided. One such factor is poor temperature control. If the temperature is too hot, your plants are much more likely to turn hermaphroditic. Pruning too early is another common cause. Other causes include, incorrect fertilization, changes in the photoperiod during the flowering phase, and of course mite infestation. All of these can be prevented as long as you’re vigilant with your plants. For instance, you should always do your pruning and topping when your plants are still in the vegetative stage, prior to flowering.
The reality is that Colloidal Silver is a "LOW STRESS" way to produce feminized pollen. When a plant Herms from environmental factors it will more then likely produce offspring that have lower stress tolerances therefore producing more Herm prone plants.
Herm pollen has the same feminizing effect as a silver sprayed plants pollen