Boron is an essential micronutrient necessary for plant growth at optimum concentration. However. at high concentrations boron affects plant growth and is toxic to cells. Aqueous extract of plant-derived smoke has been used as a growth regulator for the last two decades to improve seed germination and seedling vigor. https://www.spidertattooz.com/Orly-Nail-Lacquer-For-The-First-Time-20931-p28703/