azrael

I cant say I took too much notice of the mulch...except that it was deep ...probably 75-100mm....it may have been mulch left from the former line of Bangalay Eucalypts that were here (that's Euc.botryoides).
Those trees (about 15 in all) were in a pretty bad state with buried trunks (about first 500mm) and aerial decline. A couple were pretty corrupt from termites (I inspected those trees in 2004...in the context they were neighbours trees to a proposed development site next-door...over that fence you can see).
Anyway the whole lot (trees) got removed and replaced....I'm guessing the developer offered to have them removed ... they would have been quite spatially demanding to his site...(but I dont know for sure).

These new trees must have been planted by a Landscape Contractor...or at least some-one who knew what they were doing....very regular spacing @ 4m to the dot, staked and tied correctly...no weeds coming through...although some regrowth from the Callistemon stumps (Botlebrush) which were previous interplantings. A very nice replacement planting indeed....