How do you repot an orchid?

For an orchid, you're going to need to take care to see what type of soil substrate it needs. Orchids aren't typically grown in actual soil. They're going to be grown in Spagna moss, or a mix of bark. They can be potted in orchid bark as well. You're going to want a pot that has lots of aeration. Orchids are epiphytic, so their roots need a lot of aeration and drainage. You're never going to want to pot an orchid into a pot that is much bigger than its existing grow pot. They like to stay very compact in the soil since their structure is really held together by the roots. I would suggest choosing a pot that's only 1-2 inches wider in diameter.