I Wonder Why This Number Is Rising So...
Politics1 min ago
No best answer has yet been selected by fireblade. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.As Newt says if you do kill a standing tree it becomes a danger but you can kill them or the stump after it's been felled with something like SBK or Trichlopyr.
The copper nail idea does NOT work, it's an old wives tale. There are some very good tips on trees on the link below. I will add that the RHS often uses copper tacks to attach labels to trees and shrubs
http://www.wcisa.net/myths.asp