Cerastium
tomentosum looks like it might be drought tolerant but really seems to
like the water, long draughts and frequently, particularly for
gardens away from the coast. Snow in Summer needs decent drainage or
the lower stems start to rot and patches die out. Given the perfect
garden conditions Cerastium tomentosum is a great plant. This
particular patch of Snow in Summer is in the fog belt near the coast on
sandy soil. Snow in Summer is not particularly heat tolerant
and does best in more Northern climes. Cerastium tomentosum grows
4" tall and slowly spreads as far as the water and light allow.
Cerastium tomentosum is Winter hardy down to zone 3.
High resolution images of
Cerastium tomentosum are available.