Philodendron Angela Variegated Edit Ive been told these could be either Earthworm hatchlings, Potworms from Fungus Gnats or Jumping worms commonly found in potting soil. We are told most likely the Potworms from Fungus Gnats , We Cleaning Terracotta Pots Terracotta pots are best cleaned at the end of autumn and again before replanting in spring, especially in Melbourne's cool, damp winters. Cleaning them before winter storage Deroma 5.9" Like Recycled Plastic Black