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Unread 06-02-2006, 05:00 PM   #1
glen_river
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Default cedar turning brown

To Canadian Gardener

I just used cedar bark mulch on my shrubs, how does it kill the trees
as you said in your post? Also, how do you treat cedar trees that are turning brown? Do you have any homemade remedies? I just used anti-bacterial soap before and it worked but it seems like this time, it doesn't
and I have fertilized it already with slow release fertilizer. Can I add vinegar
or bleach in small amount like what they use in cut flowers?

I have to post this as a new post because nobody seems to notice it as a reply to an old post.
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Unread 06-02-2006, 05:59 PM   #2
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Default Re: cedar turning brown

I'll make sure Margery sees this.
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Unread 06-03-2006, 02:53 PM   #3
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Default Re: cedar turning brown

sorry, I didn't see this.

Cedar bark contains some kind of thing that retards the growth of other plants, but trees and bigger stuff should be ok. It tends to kill off perennials, and smaller plants as well as choke out weeds.

The bark mulch I use is from pine trees and it's fine. Medium bark mulch in my area is made from ponderosa pines, and the fine grade is cedar.

If you have it, don't worry, it'll break down and be ok after a bit. You haven't poisoned your garden or anything.

Cedar trees turning brown?

If these are the hedge type, then wherever they lack light they go brown and die off and send branches and green growth elsewhere. They are slow growing so this is why you may see in a hedge, brown or empty spots where light doesn't get thru.

But as for cedar trees in general, dying branches just prune them off. If the tree is dying, I'm not sure why.

Light is important to them, so is moisture. They are a coastal rainforest kind of tree to begin with. They like peaty acid soil and usually do best on the coast.

They don't like the drying out that winter often does to them, or snow loads.

They are naturally resistant to most fungal things, but you might ask at your local greenhouse or nursery or agricultural station if there is a problem in your area-- a disease going thru or a local affliction.
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Unread 06-03-2006, 02:55 PM   #4
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Default Re: cedar turning brown

I wouldn't be putting vinegar on the trees, it is an acid, and even plants that love acid soil might think it too much.

As for bleach, it will break down as soon as it comes in contact with organic material such as bark or trees. It lasts a little longer in soil. I use a dribble or two where I want to discourage cats but not a lot in my garden. Most of my plants are tough enough to withstand the neighborhood cat patrols.
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Unread 06-03-2006, 03:11 PM   #5
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Default Re: cedar turning brown

I took a look at your other posts, and you mention a zone 2b. You may have winterkill on the cedars. I'm assuming they are a hedging variety. Your local garden center may be able to help, either replacing them, or giving you ideas for local winter protection needs.

many people wrap their cedars with burlap or spray an antidessicant spray to reduce winter kill.
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Unread 06-05-2006, 07:32 PM   #6
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Default Re: cedar turning brown

Thanks for all he replies, we are on zone 5B not 2B, also it is the pyramidal
cedar and globe cedar type tha turns brown on the side where the sun doesn't get through because they are facing east and in front of the house and receiving no western sun. But actually in front, the side facing east also have some spots that start to turn brown, too. That's is why I was thinking it is being attacked by tiny tiny bugs, whatever.

Last edited by glen_river; 06-05-2006 at 07:36 PM.
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Unread 06-08-2006, 03:56 AM   #7
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Default Re: cedar turning brown

Glen - what is the condition of the soil around the base of the tree? What is the drainage like?
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Unread 06-08-2006, 06:42 PM   #8
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Default Re: cedar turning brown

The soil is in very ideal condition, it drains properly, moist, fertilized, etc.
Far from us ( a block away) I saw a cedar tree which is exposed to both eastern and western sun but it has turned completely brown now.
There must be some kind of bugs so tiny, you can't see it and kill it slowly.
Maybe the owner did not bother to try something to save it.
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Unread 06-12-2006, 09:18 PM   #9
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Default Re: cedar turning brown

It may be a local pest. Try asking your local garden center what is happening. Bring in a sample. I've no idea what it is.
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Unread 06-13-2006, 06:29 PM   #10
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Default Re: cedar turning brown

it seems like nobody in this forum have experienced that. actually
I consulted one of the garden centers here and all I was told was to fertilize it and that is what I did. and still it is turning brown slowly.
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