Re: What's wrong with this hop plant

Mon Aug 30, 2010 9:37 am

TheDarkSide wrote:Looks like the powdery mildew that took out my pumpkin plants this year.


Agree. There are sprays for roses but for food plant don't recommend it you know. Maybe not enough sun and too much standing water on the leaves. Where are the hop grower experts?
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Metal Tiger
 
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Re: What's wrong with this hop plant

Mon Aug 30, 2010 7:29 pm

These hops get full sun all day.
I water them maybe once a week and I only water at the bottom of the plant.
I don't see any bug infestation.

Some of the hop cones have a browning of the leaves, but they just seem to be dry.

Powdery mildew is white - none of the leaves are white.

They are kind of a verigated yellow - maybe it's downy mildew?
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Re: What's wrong with this hop plant

Tue Aug 31, 2010 1:07 pm

Possibly iron deficiency? If the soil is highly alkaline, the Fe present may be bound up and not available to the plant... iron deficiency shows up as more of the variegated yellowing of the leaves...
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Re: What's wrong with this hop plant

Tue Aug 31, 2010 4:26 pm

spiderwrangler wrote:Possibly iron deficiency? If the soil is highly alkaline, the Fe present may be bound up and not available to the plant... iron deficiency shows up as more of the variegated yellowing of the leaves...


That's a good ide, I'll take a ph reading.
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Re: What's wrong with this hop plant

Tue Aug 31, 2010 4:59 pm

Here is an idea. Why not take a cutting of that down to the local garden center/nursery or to the county extension office. Either place will have folks trained to know this kind of thing.

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Re: What's wrong with this hop plant

Wed Sep 01, 2010 7:12 am

Good suggestion Bug.... the should be more qualified than me!
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Re: What's wrong with this hop plant

Wed Sep 01, 2010 3:04 pm

Bugeater wrote:Here is an idea. Why not take a cutting of that down to the local garden center/nursery or to the county extension office. Either place will have folks trained to know this kind of thing.

Wayne


I agree. Based on Wayne's comment I found this site which lhas a good description of issues.
http://www.ppath.cas.psu.edu/EXTENSION/PLANT_DISEASE/

Thanks Wayne.
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Re: What's wrong with this hop plant

Fri Sep 17, 2010 1:54 pm

Just stumbled across this..Possibly something similar?

http://www.freshops.com/hop-growing/hop-powdery-mildew
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