Fertilome Horticultural Vermiculite

Vermiculite is primarily used to increase water retention and improve soil aeration. Its unique, accordion-like structure holds onto moisture and nutrients, releasing them to plant roots as needed while preventing the soil from becoming overly compacted.

Yes, it is excellent for seed starting. It creates an insulating microenvironment that helps maintain consistent temperatures and moisture levels, which are critical for uniform germination.

No, this is a pure mineral amendment derived from mica. It is not pre-fertilized, so you will need to provide nutrients through your chosen potting soil or a separate fertilizer program.

While vermiculite is great for aeration, it is designed to hold onto water rather than drain it away. If your goal is to improve drainage in heavy clay soil, perlite is generally a better choice, as vermiculite will keep the soil wetter for longer.

This bag contains 8 quarts of horticultural vermiculite, which is equivalent to approximately 0.28 cubic feet.