Planting pampas grass

Question

Can you plant it directly in sand on the beach or do you need to put top soil in the sand

Answer 1

A sandy loam type soil is ideal, but not essential. In fact, it grows exceptionally well along the coast in almost pure sand.

https://www.gardeningknowhow.com/ornamental/foliage/pampas-grass/growing-pampas-grass.htm