Madagascar Palm

[Bushbaby]

Two parts potting soil to one part good compost - mushroom or otherwise, would probably do it. If you can add some well decomposed leafmould as a mulch, that would also lessen evaporation from the soil and continue to break down, providing nutrients in much the same way a palm would experience in a natural setting. When repotting, make sure the top line of the soil is an inch below the rim of the pot - it will allow for a good soak every once in a while then.