can I add more dirt to my 5 year old lilies in pots, and if so when?

Question

The dirt is about 8 inchs from the top of the pot and the lilies are 4 inchs high. I am a landscaper and designer so my description is accurate.

Answer 1

You won't want to add soil to the top, I would lift the lily's and add soil to the pot itself. A soil refresh without changing the pot.