The best type suggested here seems to be what’s called a 5-1-1 mix. I’m sure it’s great but it seems tedious to me. A few searches here should bring it up. I use Miracle Grow cactus soil (orange bag- it’s not really great for cactus) mixing in perlite and orchid bark (both also MG). I use a pot with drainage and water until it comes out the bottom. I don’t water again until it’s dry. I check with a wooden skewers or dowel rod the whole way to the bottom.

Awesome! I have a bag of orchid bark that is waiting for me to use. Where did you get your pot at? I’m having a heck of a time finding a suitable sized pot!

Hi Jayce. Careful with the orchid bark. :) The common recommendation at generalist plant websites is that these need well-draining porous soil (they say that about most plants). Monstera actually don't really need that, at least not anymore than any other common houseplant does. What they need more is lots of water and nutrients, and honestly just barely decent drainage. They want their soil to be "rich", like they get in nature. So a lean bark-based mix that needs watering multiple times per week (opposite of rich soil) will really limit your leaf size, even if you are fertilizing regularly. The professionals who grow these by the thousand use peat-based mixes with a little perlite.