"June Hughes" wrote
My husband used half a bag of concrete - cement, gravel and sand and left
the other half out, where it got wet. I now have a
half-a-plastic-bag-shaped lump of concrete. Does anyone know how I can
get moss or a similar stuff to grow on it, please? Or how I can age it to
make it look a bit more presentable. If it were green, it would be quite
attractive surrounded by plants but as it is at present, it is an eyesore.
Many thanks in advance.

Spray it with dilute live natural yoghurt a few times.

--
Regards
Bob Hobden
just W. of London