I dont think eucalyptus is as fast growing, but I didnt research it specifically.
I did look at poplar, but there's some issues about rust and genetic problems with the current species strains that are availble.
M&D recently had a massive one felled in their garden. Not a particularly nice tree to have around as the bark and leaves dont mulch well and it sheds it's bark all year round making quite a mess.
I like willow because it seasons so quickly, is easy to split and since I dont have an open fire I dont have to worry about spitting.


