Monstera Plant Potting Soil. Most plant authors include the free draining tag for Monstera soil but that means free draining soil including humus just like almost all tropical houseplants prefer not free draining like a cactus. This is a soil mixture that is very airy.
Although your monstera can tolerate a slight variation it would be ideal to maintain a pH level of 6 for ideal growth. If you are concerned about overwatering a succulent and cacti potting mix could be a good option. Monstera roots hate having too much water.
Anything below 55 can be too acidic for your monstera.
By making your own soil you get to experiment and research which ingredients work best with a particular plant. The plant needs warm interior temperatures of at least 65 degrees Fahrenheit 18 C or warmer. Repot the plant in the same container. Although your monstera can tolerate a slight variation it would be ideal to maintain a pH level of 6 for ideal growth.