Question: Will I need to amend that soil any for specific types of plants?
Answer: Yes. For example, with cactus and succulent plants you’ll probably want to cut back to 40 percent peat moss and include 20 percent expanded shale or fine aquarium pebbles. That will provide excellent aeration. In other cases such as orchids, some bromeliads and a few ferns, you’ll use entirely different growing media. In those cases, it will need to be extremely porous and highly organic.