Fan palm in raised bed

[Brandywiz]

On the wet side of the Big island in Hawaii.  Want to plant a fan palm in a raised bed.  We are on a rock hard lava shelf so digging down is almost impossible.  Any experience with this palm planted in raised bed?  What size bed should be built. 

[happypalms]

Raised beds are a game changer in palm growing, I have a similar situation with my property lots of rocks and rock shelves. 
About 30 years ago I landscaped around my house with raised beds, and raised beds are far superior for growing palms if your property has rocks. Make the beds at least 3 feet tall or higher if you can terrace if you have too as well that works just as good. Even a small raised bed works well, a simple one foot border edge works wonders, backfill with the best soil you can find. Then sit back and water and in a few years time instant garden!!

[Mazat]

13 hours ago, happypalms said:

Raised beds are a game changer in palm growing, I have a similar situation with my property lots of rocks and rock shelves. 
About 30 years ago I landscaped around my house with raised beds, and raised beds are far superior for growing palms if your property has rocks. Make the beds at least 3 feet tall or higher if you can terrace if you have too as well that works just as good. Even a small raised bed works well, a simple one foot border edge works wonders, backfill with the best soil you can find. Then sit back and water and in a few years time instant garden!!

so beautiful, Richard.