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 Post subject: root rot viburnum
PostPosted: Sat Jan 14, 2017 9:40 am 
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Location: Houston,TEXAS
How should I treat root rot in my Walter's Viburnum? (dwarf, Whorled Class)


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 Post subject: Re: root rot viburnum
PostPosted: Sat Jan 14, 2017 12:56 pm 
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Joined: Wed Jul 02, 2003 8:09 pm
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Location: Fort Worth,TEXAS
Tell us more about the age and location of the plant. Do you water? How is the drainage? Where are you and what is the soil like? And have you looked to see if it is planted too deep? That's a problem for woody shrubs also.

There is an entry for Walter's Viburnum in the Library of Organic Information.

I have several of these in my yard so far from the house that they never get supplemental water and they are still growing after many years. My plants aren't dwarf, but they grow in the understory so they don't grow fast or bloom as much as they might in a brighter setting.

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 Post subject: Re: root rot viburnum
PostPosted: Sat Jan 14, 2017 5:24 pm 
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Location: Houston,TEXAS
We are in Houston. Been organic for 20 years. We have mature Whorled Class Walter's Viburnum along the front of our house (south); they've been there about 8 years and haven't given us any problems. Half of them are in part shade and bloom sparsely, the others are in full sun and bloom profusely. We planted these new ones along the west side of the house about a year ago where we had recently removed Indian Hawthorne that was old, leggy and not getting enough sun to bloom. Drainage is good. We use our irrigation system 2 times a week during the summer. These shrubs started to fail late last spring, one plant at a time (not all in a row). 3 out of 12 are still healthy.

I've had 2 people tell me it is root rot; one thought it was cotton root rot that spreads on tendrils through the soil with no cure available. Thanks for any help you can provide.


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 Post subject: Re: root rot viburnum
PostPosted: Sun Jan 15, 2017 11:59 am 
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Joined: Wed Jul 02, 2003 8:09 pm
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Location: Fort Worth,TEXAS
Here's the information on cotton root rot. It seems kind of out of the blue as a suggestion for these plants.

More suspect is the relatively recent planting and their failure to thrive. Did you soak the roots in water or compost tea and unwrap roots from inside the container, then plant these each in a shallow hole, stretching out the circling roots and covering them in place with the native dirt? When I first moved into my house I wasn't organic and I didn't know about how to plant properly and lost several shrubs and trees over the next couple of years as they slowly died.

You can dig these up and replant them correctly, even after a year.

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