Blue Spruce
Q.

Colorado blue spruce turning brown.

Zone Sheridan,wy | Anonymous added on October 2, 2017 | Answered

I,ve asked this question before,but forgot to tell you that when they were planted the burlap bag and the metal basket was left on.Was this the wrong thing to do.

A.
A.Answers to this queston: Add Answer
dawnjhiking
Certified GKH Gardening Expert
Answered on October 3, 2017

Hello,

Thank you for sending us your gardening question. You did not specify whether it was the branches or the center of your tree turning brown. If it is the lower branches turning brown, it could be cytospora canker. If it is browning from the inside, it could be mites, in which case you should apply a miticide.

As for the burlap and wire, natural burlap will disintegrate in the soil. Baskets made from heavy gauge wire are often used to help hold a B&B root ball intact during shipping and handling. Wire also allows for the tree to be picked up by the root ball instead of the trunk. This is a very effective means of ensuring that roots inside the root ball remain intact with soil. Wire in baskets degrades slowly in soil, and can be intact 20 years after planting. However the welds typically degrade sooner. There is no research documenting the detrimental effects of wire baskets on trees. In fact, some research shows that roots engulf the wire with little apparent harm to the tree.

Here are a couple of articles you might find helpful:

https://www.gardeningknowhow.com/plant-problems/disease/cytospora-canker-disease.htm

https://www.gardeningknowhow.com/ornamental/trees/colorado-blue-spruce/care-for-colorado-spruce.htm

Please let us know if you have any other gardening questions and happy gardening!

Thanks
Gardening Know How

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