Stilly River Sage,
This cocktail is certainly not a noxious mixture when used for this purpose. It is drawn fom a book on organic gardening by a horticultural expert from The Royal Horticultutal Society at Bisley, Surrey. The coarse Sharp sand contains nothing that will damage the top dressing or sward of the lawn and will assist aeration. The sulphates, compounds of naturally found elements, are intended to "drown" plants such as daisies, plantains, clover, moss, dandelions and a host of others in excess nitrogen which they will greedily take in, at the same time feed and promote strong growth in the grass. When carefully distributed the result is an attractive grass only lawn. Regarding the broad leaf plants such as plantains and dandelions which are not particualarly attractive in themselves, if left to grow large they produce a patch where all the grass has been stifled.