| I would purchase a bag of good quality potting mix. I assume your seed has a small root, and the beginnings of a small leaf ? Or perhaps just the root coming out ? Put the seed just below the level of the potting mix. Being careful with the emerging root. If it is a long root, perhaps fill up the pot with the mix, whilst holding the seed and root. So the mix just falls nicely around the root. What sort of palm is it ? I have propagated Bangalow palms, Archotophoenix cunninghamiana, and Cabbage Tree palms, Livistona australis. I have had great success, they seem to be pretty hardy seeds, once they get going. | 
