I thought it would be cool to have a giant tree in the middle of my castle, so I was planning to plant four trees next to each other, and then when they grew I would put a layer of dirt on top of them and plant four more ect. Would this work, or would the trees be to close together? Also would putting a layer of dirt ontop of the trees be enough for them to grow?
Black Steel http://img15.imageshack.us/img15/2492/gyenyame.jpg
Aside from a large tree randomly growing from sapling, you could try growing them near one another and stacking them. Trees require 2 spaces on each side, 7 above. If you were to place a dirt block on top of a grown tree and clear those 2-block space on each side, you could plant another sapling. There was a thread on the MC forum a while back when the new tree system was implemented with someone making a *monster* tree Quite impressive.
The size of the tree that grows is random. I've grown huge trees before (25+layers high) but it's apparently rare. Happwned when I planted a tree next to my tall house, tree grew higher than the house.
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