The key difference between caring for full-sized orchids and mini orchids is quantity. Since minis are smaller, they naturally need less water and fertilizer. Rather than the standard three ice cubes, but minis only need one ice cube per week.
The typical pine bark media used for full-sized orchids is too bulky for small mini pots. Instead, mini orchids like to cozy up to sphagnum moss media over wood chips. While this doesn’t cause any significant change in care, you might have to move some moss aside to check the health of your mini’s roots.
You may need to repot your mini orchid as it grows. You can even add it to an existing pot with a full-sized orchid (if there’s room). This can create an aesthetically pleasing arrangement of large and small blooms.