Remove any yellow or dead leaves by cutting their stems off at the base
The long leaves can accumulate dust, so give them a gentle wipe to keep them clean. To help the potting mix and root zone stay moist, cast iron plants can be gently and briefly immersed into a tub of water every month.
Dust the leaves regularly by gently dusting them with a small brush or feather duster. Dust can clog up the pores of the leaves and make it difficult for the leaves to function.
Lightly prune in winter.