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Dead Daphne #749279

Asked May 11, 2021, 11:14 AM EDT

I had planted a Daphne hedge which are all clones from a single plant. The hedge has thrived and looks good except for one that has died. The plants are around 5 years of age. Prior to its death, a Daphne was purchased from a nursery a couple of years ago and planted next to the plant that has perished in order to fill the gap between plants. This purchased Daphne died prior to the cloned plant. It could just be a coincidence since the surrounding plants are good. Does the soil need to be treated with some "antibiotic" prior to introducing another clone in this area considering that there may be some contamination?

Coos County Oregon

Expert Response

Hello

I need a bit more information before we can attempt to diagnosis the cause of death of your plant.  What were the symptoms of the Daphne plant before it died?  Did the leaves turn yellow (or another color) or just wilt and fall off.  What did the roots look like when you removed the dead plant from the soil?  Do you have any pictures of the diseased plant?  Is there good drainage where the plants are located?  If you could get back to me with a response, it will help me narrow down potential diseases and recommended treatments.  Thank you

Samantha

Samantha Clayburn (she/her/hers) Replied May 11, 2021, 12:26 PM EDT
image
Here is a photo of the Daphne prior to the leaves turning completely brown.  No leaves have fallen.  The drooping and discoloration of the leaves (as above) was the first indication that something was wrong while the surrounding plants were thriving.  Again, the leaves on the plant are all there today, but are very brown.  I have not pulled the plant up for fear of injuring the root systems of neighboring plants.  My plans would be to cut the dead plant close to the soil and place another Daphne in that area.  The soil drainage is good here on the coast with a sand /clay predominating.  When this plant went into the soil, compost was placed in the hole just like all the other plants received.

Thanks,
Charles Couture


Subject: Re: Dead Daphne (#0019210)
 
The Question Asker Replied May 12, 2021, 4:41 PM EDT

Hi Charles

Browning of the leaves could indicate a fungal or virus in the soil but if the other surrounding plants do not have any signs or browning of leaves it could just be that one plant had a different issue.  Before cutting the plant down completely, scratch the bark on the branches towards the tips and further down closer to the trunk and see if the underlying layer is brown or green.  If it is brown even down by the trunk, then most likely it will not recover and you would need to replace with a new one.  If the underlying layer is green though, you could wait it out and see if it puts out new growth (green indicates the plant is still alive and the brown leaves you are seeing could be from sun scald or a freeze issue which only affects the leaves and is temporary until new growth comes on.  If you notice other surrounding daphnes start to do the same thing it could be a root rot issue which will spread through the soil and affect the surrounding plants.  Here is more info on that.https://pnwhandbooks.org/plantdisease/host-disease/daphne-root-rot

Samantha Clayburn (she/her/hers) Replied May 12, 2021, 5:56 PM EDT
Thank you so much for your help.

Charles Couture


From: Ask Extension <<personal data hidden>>
Sent: Wednesday, May 12, 2021 2:56 PM
To: ccouture <<personal data hidden>>
Subject: Re: Dead Daphne (#0019210)
 
The Question Asker Replied May 13, 2021, 12:18 PM EDT
Good morning,

FYI.  I did scratch close to a leaf and at the base of the plant.  Just below the surface it was green.  So we will see if the plant bounces back.

Thank you,
Charles Couture


From: Ask Extension <<personal data hidden>>
Sent: Wednesday, May 12, 2021 2:56 PM
To: ccouture <<personal data hidden>>
Subject: Re: Dead Daphne (#0019210)
 
The Question Asker Replied May 18, 2021, 11:40 AM EDT

Hi Charles

That is promising that the underlying plant material is still green and I hope the Daphne plant returns to a healthier state for you.

Samantha Clayburn (she/her/hers) Replied May 18, 2021, 4:21 PM EDT

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