On 07/11/2013 13:02, Stephen Wolstenholme wrote:
Our new bungalow has a detached concrete slab type of garage with an
asbestos roof. The roof is covered in green moss and so it doesn't
look so bad. The walls look awful as they just plain concrete. We want
something to cover the walls. So far we have one of those fast growing
vines and two virginia creepers growing up the walls but it would be
nice to have smething growing down from the moss covered roof. Any
ideas?

Steve




It seems to me that if you grow anything substantial down from the roof,
it will eventually block the light reaching the existing vines. This is
apart from (as has already been said) there being very little sustenance
for any plant to grow in up there.

You either have to be patient or, if you really want to grow something
on the roof, have it structurally assessed before setting up a roof
garden. Even the usual roof garden planting (sedums, sempervivums,
etc.) does not hang down, but it will attract bees and other insects.

If your garden were large enough and you had a vacant sunny plot next to
the garage, you could build a pergola along the length of the miscreant
wall, and grow wisteria. That would be a considerable distraction!

--
Spider.
On high ground in SE London
gardening on heavy clay