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After some weeks away we came back and found our pine trees getting yellow. It starts from the outside and at the moment there are not many brown branches/needles.

I read it could be manganese deficiency, or the cold weather (we have been told it was freezing in the south in our absence). I will appreciate any comments as we are quite new and my dad (the gardener) passed away last year.

Pine - https://www.flickr.com/photos/9050012@N04/shares/KGk8qh

  • Sorry I tried to use flickr to upload a picure without sucess. If it helps I will copy it here: flickr.com/photos/9050012@N04/shares/KGk8qh aparently the frost was short, the trees are in a sunny part for about 3-4 years in yhe same place, without any replanting in the middle. Thanks! – Diego Monjes May 19 '17 at 10:33
  • In my Android phone under chrome browser it does load but Add Picture only load and does not go anywhere else. – Diego Monjes May 19 '17 at 10:45
  • But pine wilt is not widely spread like Portugal... I couldn't find any outbreak here in UK. The tree was not prune in all these years, there is no logs or cuts and the pine was growing quite healthy. Do you know which nutrients do this type of tree be lacking? – Diego Monjes May 19 '17 at 11:05
  • Sorry!! My mistake, we are in the south of England, an inland town called Crawley. – Diego Monjes May 19 '17 at 11:12
  • The picture is not of a pine tree, looks more like a cedar also called arborvitae – kevinsky May 19 '17 at 17:23
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I've seen this in the North (Wisconsin and Minnesota) quite often. It looks like your "Pine", which may be an Arborvitae (White Cedar) may have experienced winter burn. The fact that your tree is planted in a pot makes it susceptible to winter burn because of its shallow root system. The browning occurs when the plant might try to transpire in the sun, but it cannot replace the water it is losing because the soil is frozen.

You can prune out the dead foliage about now since new foliage may be emerging.

See example photo

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