a million trees
Well succulents and ivy's are easy to take care of.
I have a friend who does bonzai, those are a bit harder.
But all in all, a neighborhood of nice green lawns usually make for
a nice sight. Birds of paridise are hearty even in the dessert where i live,
but i hear they are hard to root. Now if you just want a nice look for a while,
you could try morning glory, (heavenly blue is my favorate).
Shekwasha is a nice little
bush. And it has a fruit that goes really well with drinks.