White Widow increases the speed and aggressiveness of your plants root development with super-fine, easily soluble white powder containing mycological spores. White Widow is a diverse, pure endomycorrhizal the effectiveness of which relies heavily on two variables: the amount of spores in the product itself and the ability of that product to become soluble in water. White Widow delivers on both accounts. Within a week of transplanting with White Widow, it's not uncommon to see large, furry, bright white roots shooting out of the bottom of your containers. You focus on keeping things healthy above-ground. Humboldt Nutrients White Widow will handle the situation down-under.