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Name: J.p.
Northern California (Zone 9b)
GetulaHunter
Jul 21, 2014 6:42 PM CST
Hello everyone I am fairly new to the gardening seen and in the past had anything but a green thumb. For the last few years, I have been learning a lot and doing MUCH better. That being said I normally stick to the real hardy stuff, like different succulent species. Walking into WinCo foods my wife had seen some Dahlias and talked me int trying them. well everything was going fine and then BOOM one of the D's starting turning white and within a week it was toast. :==( I thought that because of where it was located that when we can home in the evenings and parked the heat from the engine was killing it. I moved it but it was to far gone and died. This sucked but I thought I figured out the problem and this would not happen again. But no we have other plants that are doing the same thing. I am very worried that they are too, going to dive bomb and croak.

I am rambling how about I show you some photos.


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Thank you,
John Stephenson
Name: Ann ~Heat zn 9, Sunset
North Fl. (Zone 8b)
Garden Sages Native Plants and Wildflowers Xeriscape Organic Gardener I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level
Butterflies Charter ATP Member Plant Identifier Region: Florida Dog Lover Birds
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flaflwrgrl
Jul 21, 2014 7:26 PM CST
I think you may have spider mites. I notice you are in N. California where it is hot & dry now & that's just the perfect conditions for spider mites. Look on the underside of the leaves & see if you find anything looking like very fine webbing.
Check out these links:
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7405.html
http://www.ipm.ucdavis.edu/PMG/T/I-AC-TSPP-CD.125.html
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others.
~~ Sharon Brown ~~



Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
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chelle
Jul 21, 2014 7:49 PM CST
I agree
Cottage Gardening

Newest Interest: Rock Gardens


Name: Ann ~Heat zn 9, Sunset
North Fl. (Zone 8b)
Garden Sages Native Plants and Wildflowers Xeriscape Organic Gardener I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level
Butterflies Charter ATP Member Plant Identifier Region: Florida Dog Lover Birds
Image
flaflwrgrl
Jul 21, 2014 7:54 PM CST
Here is some info. for dealing with them.

http://homeguides.sfgate.com/organic-ways-rid-spider-mites-7...
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others.
~~ Sharon Brown ~~



Name: J.p.
Northern California (Zone 9b)
GetulaHunter
Jul 21, 2014 9:43 PM CST
Thank you! Looks to be Spider Mites. Grumbling
Now the work begins. Crying
Thank You! J.P.
Name: Ann ~Heat zn 9, Sunset
North Fl. (Zone 8b)
Garden Sages Native Plants and Wildflowers Xeriscape Organic Gardener I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level
Butterflies Charter ATP Member Plant Identifier Region: Florida Dog Lover Birds
Image
flaflwrgrl
Jul 22, 2014 4:43 AM CST
I tip my hat to you.
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others.
~~ Sharon Brown ~~



Name: Peter
(Zone 9a)
The only scarce resource is time
Dahlias Dog Lover Bee Lover Cottage Gardener Roses Bulbs
Seed Starter Lilies Hybridizer Garden Ideas: Level 2
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Cantillon
Jul 30, 2014 5:36 PM CST
yep, red spider mites. Spray with water, have them stand above a tray of water on stones, and keep the humidity high. Also spray with an insecticide and in about a week, take off half the affected leaves. Then a week later, take off the rest. New leaves will grow from the axils.and these will be fresh.

You probably should feed the plants as well, since they must be growing in pots, and dahlias are heavy feeders.

Even better, put them outside, preferably in a big pot, or in the ground, and water deeply at least once a week.

All the best
I tip my hat to you. Peter

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