Plant stimulants aid in how plants process minerals. They help plants access and take up water and minerals more effectively. Bio-stimulants make plants more productive and stress resistant, improving growth results beyond what can be achieved with regular fertilizers alone.
Humic Acid and Amino Acid are chelators. Chelators help plants take up minerals better.
Kelp extract contains growth hormones that are beneficial for stimulating plant processes.
Yucca is a speading agent that helps feeding solution spread out better on the leaf surface and in grow media, improving nutrient absorption by plants.
Bio-stimulants are not fertilizer. They enhance the effectiveness of fertilizer.