Growth Science Strength, 2.5 Gal Silica is a necessary element for the development certain plants but it is often overlooked. Therefore we’ve developed Strength®, the silica booster for Growth Science®. Silica is used to strengthen cell walls, giving plants solid stalks and stems. Silica also creates wider tougher leaves. The surprisingly tough serrated edge on a blade of grass, and the wonders of bamboo, are both examples of silica at work. The take away is a plant that is more efficient at photosynthesizing and more resistant to stresses like heat and drought. Strength® was specially formulated to work in conjunction with the rest of the Growth Science® nutrient regimen to increase your plants resistance to stress, as well as providing extra potassium at the beginning of the flowering stage of growth, to help the plant meet its increased nutrient demands so that you may have the largest yields possible.