Douglas Fir Trees

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  1. exposing tree roots
  2. does a douglas fir tree effect the soil for a garden?
  3. Douglas Fir Evergreen Trees turning brown
  4. Douglas Fir
Asked by joekingbaca on January 21, 2015
Exposing Tree Roots

I would like to expose the roots on two giant Douglas Firs on my property. The trees have ground covering over them now but would like to put small rock down and feature the root system. How much can I expose without causing damage to the tree? The roots already have busted up the cement walkway to the house, so I will remove all of that and put in a small bridge. Thanks for the help. Joe

ANSWERS
Heather
Certified GKH Gardening Expert

I would not risk exposing too much. Mainly because fir trees tend to have very shallow root systems. While exposing too much root can harm the plant, I think in this situation the bigger risk would be that you could be making the trees unstable. Without a sturdy root system, a good storm could cause the trees to fall. Fir trees are already pretty notorious for causing damage to property without their root systems being tampered with, and you would be pushing your luck to do so.

If you are still dedicated to this idea though, I would recommend that you consult a local arborist who would be able to tell you after examination if it is safe to remove soil and how much you can safely remove. Your local extension office should be able to give you the name of a local arborist. You can find your closest extension office with this tool:
https://www.gardeningknowhow.com/extension-search/

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Asked by Volcano2014 on February 16, 2015
Does a Douglas Fir Tree Effect the Soil for a Garden?

My house had a 50ft tall Douglas Fir that fell in a recent storm and I want to use the now available sun to make a vegetable garden. I was wondering if I would have to put new soil in the place where the fir was, or is it OK to still grow a garden there.

Thanks!
Volcano2014

ANSWERS
Volcano2014

Thanks! i will definitely add some nutrients and compost. just making sure it wouldn't make my cucumbers poisoned

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theficuswrangler

You can use the space for a garden. It would be a good idea to get a soil test first, to check on pH and nutrients, because the big tree may have used a lot in the area. Also plan on using plenty of compost and other organic amendments. You can get a soil test, and lots of good advice, from your local extension service. Use this link to find the nearest office: https://www.gardeningknowhow.com/extension-search/

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Asked by Anonymous on July 3, 2015
Douglas Fir Evergreen Trees Turning Brown

I have had 2 Douglas Fir evergreen trees die on me over 2 years. Whatever is killing them it only hits one at a time. They are in an open area of my yard, but next to a tree line. I live in NE PA. They turn brown slowly until they are completely dead. We did a mite test with paper and did not see any mites. What could be killing these trees?

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert

I have had 2 Douglas Fir evergreen trees die on me over 2 years, whatever is killing them it only hits one at a time. They are in an open area of my yard, but next to a tree line. I live in NE PA. They turn brown slowly until they are completely dead. We did a mite test with paper and did not see any mites, what could be killing these trees?

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Asked by Anonymous on July 24, 2015
Douglas Fir

I live in Portland, Oregon and have many Douglas Fir trees on my property. I have a Douglas Fir that is flowing sap year round. Also, on other Douglas Firs, the bark is opening up so that you see the trunk inside. Is this something that I should worry about?

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert

Though sap oozing from a tree can be normal it also can indicate a more serious issue.
Here are a few links for you.
You may want to consult an arborist t determine the health of the trees.

https://www.gardeningknowhow.com/ornamental/trees/tgen/wetwood-bleeding-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/what-is-tree-sap.htm

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