Forsythia Question

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Angilina Hansville, WA Jun 20, 2008

I added images in my replies

I have a large Forsythia that bloomed wonderfully this spring. But now it looks like a good chunk of it has died.
Is the whole thing going to die? How can I figure out what's wrong. Help I love this plant

This message was edited Jun 20, 2008 9:06 AM

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lbrabec (Lynn) Omaha, NE(Zone 5a) Jun 20, 2008

Can you desribe the problem or take a picture? Lynn

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Angilina Hansville, WA Jun 20, 2008

Here are three pictures

Thumbnail by Angilina
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Angilina Hansville, WA Jun 20, 2008

Here is another pictures

Thumbnail by Angilina
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Angilina Hansville, WA Jun 20, 2008

here is another picture

Thumbnail by Angilina
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lbrabec (Lynn) Omaha, NE(Zone 5a) Jun 20, 2008

Phytophthora cinnamomi is one possibility.It occurs when weather has been very wet and then turns hot and sunny.It also looks like you may have galls in the second picture.In either case,you would need to prune out all dead and dying branches.
Bacteria, fungi or insects can cause Stem-gall, lumps on stems. Cut off and burn all canes and branches that bear galls.
Die-back is a fungus that invades blossoms and flower stalks, then twigs, and kills them back. Prune out dead twigs and stems.
It looks like your shrub needs a very good pruning anyway.You should prune out at least one third of the oldest branches to the ground and also any crossing other branches.Then give your shrub a good shaping.
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Is there any possibility a lawn service or anyone has sprayed chemicals on one side? I will look into it and post more.You should post these pictures on the pest and disease or tree and shrub threads.We have a lot of real experts here and this might be solved quickly.Lynn

This message was edited Jun 20, 2008 12:55 PM

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Angilina Hansville, WA Jun 20, 2008

Thanks so much I think that the problem is Phytophthora cinnamomi as we have had a very wet season and suddenly dry...


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lbrabec (Lynn) Omaha, NE(Zone 5a) Jun 20, 2008

It is sometimes very difficult to pin down an exact fungi or exact cause of dieback and root rot.Usually the same basic techniques of pruning out and destroying the affected parts of the plant helps,providing the plant still has some healthy roots.Sometimes an expert opinion is needed,which is why I suggested crossposting.Someone here may have had the same problem and successfully saved their shrub.Let us know how it comes out.Lynn

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