I like the wall how it is. I just want some ideas on gardening mostly. Are there some plants that would look good growing in the crevices between the rocks? I'll probably transplant that snow flake elsewhere too

From your other post you're in SEQld? I can't tell from the photo whether it's a retaining wall (that is, between you and a neighbour) as you talk about the "garden above it" - or maybe you just meant on top of the rocks? I also can't see how wide it is--- which might be limiting.

I'm not sure whether you are looking into a neighbour's yard with their shrubbery on the other side of the wall or whether it's all part of your yard?

Sometimes if it is just crappy hard soil inside and no additional water it can be very hard in summer keeping things growing in a narrow space with intense heat.

However if you wanted a japanese style I would try to get things into size perspective first and, yes, that would mean ditching the snowflake--- or taking cuttings or digging it out in spring and moving it.

I'd also assess some of the other plants up there - one looks like a traveller's palm? It probably gives some shade but the roots are impossible to garden around.

Depending on how much money you want to spend and how much time you have to maintain (including watering_ I'd go for some of those cute weeping mini acacias, a few kurume azalias and add some of the nice small landscaping grasses.

@alisonoz_gw yes, I'm in seq. the garden bed above the rock wall is approximately 1m wide and the shrubs sit behind that in the neighbour's yard. Thanks for your detailed response. I like the plants you mentioned. I'm trying to keep this low budget so will likely get some clippings and small plants and plant in spring.

Looking forward to seeing how it goes...

Hi Luke. I'm a great fan of indigenous native plants (those that grown naturally where you live) for a number of reasons. One is they're adapted to your local soil, climate & weather so should survive better. Another is that if they're planted in the wet season you shouldn't need to water them unless you have a following severe drought. So you can save lots of precious water & money with plants indigenous to your area. Lastly, they'll attract whatever native bird, butterfly & other wildlife remains in your area & this is a real plus given that much of our wildlife is disappearing under pressure from increasing human intervention. Also, I suspect that properties which have the wildlife dimension will soon command premium prices if they don't already.

If this idea appeals to you then you could have a discussion with your local council's environment officer, land care group or environment group. Any of these should have lots of information about indigenous plants suitable for your situation.