My Anthurium potted plant has out grown his digs and I have been trying to find that specific potting mix for him.
When they outgrow the pot, it's time to move them.
I use the only stuff available, which is a sort of peat moss. However, the plants don't actually need soil to absorb nutrients; they're what are known as epiphytes. Just like orchids and bromeliads, the roots help to anchor the plant, and the nutrients are water-borne. They need moisture every day, because they're tropical and (maybe) originated in rain forests.
Remove the plant from its pot. There may be two, or three, or even four plants there. Just separate them. If there are loads of roots (picture 2) then just cut them off - they're draining goodness from the flowers. (picture 3)
Next step, if the stem is long, is to cut the stems into 3-4" pieces and poke them into the potting mix you have (picture 4) . Eventually, they'll start growing leaves (warning! Some of them don't make it) and you've got even more anthurium (picture 5, right in the front in the little pots).
It's essential to water them frequently and add vitamins to the water once a fortnight.
