"Bill" wrote in message
...
I have an earth bank in my garden, created a few years ago when I dug into
the
hillside to make a flat area. The bank is mostly at 45 degrees, and for
the
time being I have grassed it. It has stabilised and all is well, so soon I
will
plant it with ground cover. The problem is the part of the bank that is
steeper. It is 70 deg at its steepest, and every year a bit more shale
falls
down due to frost. With more enthusiasm than sense I ordered 20 tons of
hard
white limestone, and I have built a retaining wall 10ft high and 20ft
long. I
have left little niches in it for planting, but the immediate problem is
that I
now have a huge expanse of bright white rock to look at. Honestly it
really
hits you in the eye. I bet they can see it from space! Anyway, I'm looking
for
ways to tone it down, and I thought about the moss and other green gungy
stuff
that is growing quite happily on ancient walls nearby. Does anyone know
how I
can speed nature up a bit, and get a 50 year old covering of mossy stuff
in a
much shorter period of time?

Paint it with yogurt.

--
Brian