Plan for rear of garden

Hello,
ive sketched up this plan - any feedback would be very welcome. Some facts about the space.
- morning sun, then some evening dappled sun from behind
- a little problematic with draining in winter and a little dry in summer, but I’m building up with manure and compost by at least 6inches (the tree and fatsia are mound planted in anticipation)
any help and opinions welcome!

ive sketched up this plan - any feedback would be very welcome. Some facts about the space.
- morning sun, then some evening dappled sun from behind
- a little problematic with draining in winter and a little dry in summer, but I’m building up with manure and compost by at least 6inches (the tree and fatsia are mound planted in anticipation)
any help and opinions welcome!

1
Posts
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Is your ‘Trimmed stem timber bamboo’ going to be a living plant or just decorative dried bamboo canes? I hope the latter! Timber bamboo, better known as phyllostachys, is a large running bamboo, so never recommended for planting in the ground especially in a small urban garden. Some grow it in large pots and don’t let it root in the ground, but, like the fatsia, will get very large, so do check out eventual sizes (height and width) when planning what goes where and how many plants to buy.
bamboo is will be growing in the ground. I have a bit of experience here, I dig in a barrier and trim it back. I’m looking at a clump so may look at Fargesia also
I would very seriously consider a Fargesia instead, there are some beautiful varieties, including with colourful canes. The other is often wrongly sold as a clumper and can behave like one in the UK for many, many years, until it doesn’t. Even with your experience, it has been known to break out of concrete tanks!