Circulation of fresh air, fundamental to a healthy indoor garden, an exhaust fan creates ventilation.
A soil amendment and medium for root cuttings, vermiculite is a hydrous phyllosilicate mineral and it undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is routinely produced in commercial furnaces. Vermiculite is formed by weathering or hydrothermal alteration of biotite or phlogopite
Vitamin that is absorbed by tender root hairs, easing transplant wilt and shock.
Waxes and Lipid Fats
A compound that reduces the droplet size and lowers the surface tension of the water, making it wetter, so a liquid concentrate dish soap is a good wetting agent if it is biodegradable.