Pro-Mix HP Growing Medium

HP stands for 'High Porosity.' This means the mix is specifically designed with extra perlite to allow for better airflow and faster drainage, which prevents roots from sitting in too much water.

It is excellent for seed starting. The high-porosity structure provides the perfect balance of moisture and air, which delicate seedlings need to develop strong root systems without rotting.

Mycorrhizae are beneficial fungi that attach to plant roots to create a symbiotic relationship. They essentially extend the reach of the root system, helping your plants absorb more water and nutrients while making them more resilient to stress.

PRO-MIX HP is a peat-based medium that provides a great structure, but it has very little initial nutrient content. You should plan to start a regular, gentle fertilization program shortly after your seeds germinate or your cuttings root.

You can absolutely use it for houseplants, especially those that prefer well-draining soil like succulents, cacti, or tropicals prone to root rot. Just keep in mind that because it drains so quickly, you may need to water your plants slightly more often than you would with a standard potting soil.

The compressed bale is packed tightly for easier transport and storage. Once you break it open and fluff it up with a bit of water, it expands to the full volume listed on the packaging.