I believe that large parts of Adelaide are on a heavy limestone soil,
so you could get a book talking about the native flora of Adelaide and
see from there what is, and isn't, limestone-tolerant. Presumably the
Adelaide botanic gardens would also have relevant information.

Tish

On Tue, 26 Sep 2006 22:16:41 +1000, Chookie
wrote:

In article ,
"robertson" wrote:

does any one know of grevillea's that will cope with a lot of lime stone,
have only 300mm -500mm top soil, then we have a solid limestone plate.
I bring in as much mulch as I can, but we live in Milang SA so also have a
problem with low rain fall. not the ideal place for a gardener.
I use my grey water and lots of natives do survive, not tree's, nothing to
keep them in the ground on a windy day, so need to stick to shrubs.
I really like the native birds in the garden and grevillea's are some of the
nicest shrubs about.

Whew! That IS tough! I would be building up my garden beds as much as
possible and going for local grevilleas (if any) or perhaps Western Australian
ones. But also consider Eremophilas, and plants with small flowers.
Grevilleas with large showy flowers attract the large birds, not the smaller
ones. WHat's the local flora like? Tough as old boots, probably.