Hello fire...
I use 3 inch tall plastic pots. The kind with the small holes in the bottom will work well if the plant decides to send roots through the pot. I use a little pea-sized gravel and some organic potting mixture and plant the plant. Cover that with more gravel to keep the plant in place and it's tank ready.
One other thing, do this type of planting in the middle of a water change. It's much easier to place the pot with the water level low. This way, you avoid a potential mess with the potting mixture.
The potting mixture will nourish the plant for several months. After that, you can use root tabs placed with a pair of long tweezers. No messes.
Have fun!
B