We are trying to develop a starting soil along recommendations by Alan
Chadwick. This soil incorporations 'sharp' (sharp, non-beach, sand). We
have been told
that this is just sand from a construction company, but, since we are in
the certification process and since our goals are to produce pure food, it
is a little hard to incorporate materials from construction suppliers
without eing concerned about its origins.
Has anyone found a 'reliable' source for 'sharp' sand, or seen it advert.
in a horticultural supply catalog?