Pro-Mix HP Mycorrhizae - In-Store Pickup Only

What PRO-MIX HP actually is (and why people use it)

PRO-MIX HP is a high-porosity peat-based mix with extra perlite. In real terms, it drains fast, holds enough moisture to keep plants happy, and is much harder to overwater than typical bagged soil.

It does not contain nutrients. That’s intentional. It gives you a clean starting point so you control exactly what your plants get, instead of relying on pre-loaded or slow-release fertilizers.

This is the go-to mix for growers who want control. If you’ve ever dealt with soggy soil, fungus gnats, or plants that just sit there doing nothing, this is usually the fix.

• High drainage and airflow for healthier roots
• Lower water retention than standard potting mixes
• Dries out faster, reducing overwatering issues
• Helps prevent root rot, algae, and fungus gnats
• No added nutrients – full control over feeding
• Contains mycorrhizae to support root growth and nutrient uptake

Bottom line: if you want a forgiving mix that doesn’t stay wet forever and lets you control feeding from day one, this is it.

First time using Pro-Mix? Don’t forget nutrients — this is a blank slate, so your plants will need feeding from the start.

HP vs HP CC (Which one should you use?)

PRO-MIX HP: Peat + perlite. Dries faster and is more predictable. Best for growers who want tighter control over watering and feeding, or who tend to overwater.

PRO-MIX HP CC: Same base, but with added chunk coco coir. Holds moisture slightly longer and adds more structure to the mix.

Quick rule of thumb:
Choose HP if you want faster drybacks and maximum control.
Choose HP CC if you want a bit more moisture retention and buffering.