Christmas Tree Formula
Select a nice Christmas tree and wait until you bring it home before cutting the base. You'll want to prepare this formula and have it ready before you touch a saw:
8oz Karo Syrup (clear) - the sugar feeds the tree
2 pinches of Epsom Salts - magnesium sulphates make the needles green
5 quarts of water
You'll want to cut at least a half inch off the bottom, if not an inch, to get to fresh wood.
Then, using a drill bit, drill a hold about a 1/4" wide about a 1/2" deep in the center of the stump toward the top of the tree. This helps the tree draw from the magic solution we're about to make.
Immediately after putting the tree in the stand and making sure it's balanced, add the above liquid.
Keep an eye on the water level in your Christmas Tree stand. Don't let it go dry (otherwise you have to cut more of the bottom off and start again; even then it may be too late).
The limbs should descend back to natural levels, the needles will remain green, and the tree itself is far less likely to catch fire.