Pro-Tekt ® The Silicon Solution ® a silicon supplement, supplies higher levels of potassium and silicon to build stronger plant cell walls, providing a Pro-Tekt-ive barrier against piercing-sucking insects and invading fungi. Pro-Tekt ® reduces disease and insect problems, increase stem strength and leaf positioning, which improves photosynthesis. It also increases heat, drought and cold tolerance. Use as a supplement with any fertilizer to provide non-toxic preventative protection against fungal infections and insect infestations. Recommended for all plants.