Scorias spongiosa is a specialist and grows exclusively on the honeydew formed by colonies of the beech blight aphid, Grylloprociphilus imbricator.

This aphid is found only on one host plant, the American beech tree, Fagus grandifolia, where it congregates on branches and twigs, creating copious amounts of honeydew that drip onto vegetation below.

On tree trunks this fungus has been known to grow into a mass of hyphae as big as a football, but it is more usual for the agglomeration on branches or twigs to reach a diameter of about fifteen centimetres.

[4] As further quantities of honeydew accumulate, the fungus grows larger until it resembles a gelatinous sponge resting on the branches or leaves of the beech tree.

Fully pigmented strands in the mature stoma produce bowl-shaped pseudothecia and these outermost hyphae cease to grow.