(Originally) an area covered with scree; an accumulation of scree; (in later use also) a part of a garden, especially a raised garden bed, covered with a layer of gravel, pebbles, etc., and used for growing alpine plants.
Origin
Late 19th century.
Definition of scree bed in US English:
scree bed
noun
(Originally) an area covered with scree; an accumulation of scree; (in later use also) a part of a garden, especially a raised garden bed, covered with a layer of gravel, pebbles, etc., and used for growing alpine plants.