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TreeDimensional · 11th April 2008, 08:56 AM

Hey Scooter, you may want to try leaching some on the excess fertilizer out of the soil. Nitrogen move freely in the soil, so if they were my tree, and I was certain that it is fertilizer burn, I would give them a REAL good drink of water.

There is a possibility that it is wind burn, a good way to tell if if is windburn is it will exhibit more tip dieback on the predominant wind side of the tree. There is also a possibility that it is sunscald OR sunburn, which is normally only seen on the south-west portion of the tree.

As far as remedial action at this point, don't cut anything off. If the boroughs die back and don't initiate new growth, then the should be pruned. You will be able to determine if the tip is dead when you try to bend it gently and it breaks (snaps). This is what happens when the water conductive tissues shut down.

OK I skirted the issue enough, in my opinion, you have burned the tree with the fertilizer. See paragraph 1.

11th April 2008, 08:56 AM	#5 (permalink)
TreeDimensional Banned Join Date: Feb 2007 Location: Canada Posts: 381	Re: Blue spruce with brown tips Hey Scooter, you may want to try leaching some on the excess fertilizer out of the soil. Nitrogen move freely in the soil, so if they were my tree, and I was certain that it is fertilizer burn, I would give them a REAL good drink of water. There is a possibility that it is wind burn, a good way to tell if if is windburn is it will exhibit more tip dieback on the predominant wind side of the tree. There is also a possibility that it is sunscald OR sunburn, which is normally only seen on the south-west portion of the tree. As far as remedial action at this point, don't cut anything off. If the boroughs die back and don't initiate new growth, then the should be pruned. You will be able to determine if the tip is dead when you try to bend it gently and it breaks (snaps). This is what happens when the water conductive tissues shut down. OK I skirted the issue enough, in my opinion, you have burned the tree with the fertilizer. See paragraph 1.