Hydro-Max is a wetting agent and soil penetrant derived from the Mohave plant (Yucca Schidigera). Yucca provides a wide range of multi-functional benefits to both plants and soil conditions. Hydro-Max is compatible with all liquid and soluble fertilizers. It is an environmentally friendly product that can be applied to all soil. It is non-phytotoxic and can even be applied during hot, dry weather conditions.