Humboldt nutrients white widow

White Widow is a Mycorrhizal powder containing an extremely high and diverse amount of mycological spores. With White Widow the speed and aggressiveness of your plant’s root development is unprecedented. White Widow is bacteria free, making it ideal for hydroponic systems.

Used in soil, soil-less or hydroponic gardens, White Widow is a must have for all gardeners.

Available in: 4 Ounce | 8 Ounce