Damage, disease or bugs?

Trouble shoot problems you are having with your cactus.
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Gypscoprotheres
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Damage, disease or bugs?

Post by Gypscoprotheres »

I've spotted something on my W. johnsonii. Does anyone have a clue?

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Last edited by Gypscoprotheres on Sat Jun 21, 2014 4:49 pm, edited 1 time in total.
Gypscoprotheres
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Re: Damage or disease?

Post by Gypscoprotheres »

I hope these photos are more clear:
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adetheproducer
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Re: Damage, disease or bugs?

Post by adetheproducer »

Scale bugs by the look of it.
And as the walls come down and as I look in your eyes
My fear begins to fade recalling all of the times
I have died and will die.
It's all right.
I dont mind
I dont mind.
I DONT MIND
Gypscoprotheres
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Re: Damage, disease or bugs?

Post by Gypscoprotheres »

adetheproducer wrote:Scale bugs by the look of it.
Never seen 'scale bugs' in my life, but that name seems to fit what I see! It's to thick for being sunburn and they do look like scales...
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Steve Johnson
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Re: Damage, disease or bugs?

Post by Steve Johnson »

Gypscoprotheres wrote:Never seen 'scale bugs' in my life, but that name seems to fit what I see! It's to thick for being sunburn and they do look like scales...
Don't forget that CactiGuide has a page dedicated to pests and diseases -- see here:

http://www.cactiguide.com/cactipests/#scale" onclick="window.open(this.href);return false;

Difficult to tell for sure, but I agree with ATP -- armored scale. In the same pest group with mealies, so the best way to put down scale infestations is with a soil soak using one of the neonicotinoids such as Imidacloprid. You have plenty of growing season left, so unless you can't get Imidacoprid or something similar anymore (I have no idea what the EU laws are on that these days), go for the systemic approach instead of messing with sprays.
If you just want photos without all the blather, please visit my Flickr gallery.
My location: Los Angeles, CA (Zone 10b)
iann
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Re: Damage, disease or bugs?

Post by iann »

Scale should be fairly easy to scrape off. Don't try too hard though, because it might be actual scarring of the skin caused by something else. Scale are pretty resistant to sprays, at least to anything that won't damage the plant, so a systemic approach works best.
--ian
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adetheproducer
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Location: Porth, the Rhondda, Wales

Re: Damage, disease or bugs?

Post by adetheproducer »

Pick them off the will come of then use some bayer spray most garden centre/supermarkets will have it. It worked well with a tree in my garden. No re-infestation.
And as the walls come down and as I look in your eyes
My fear begins to fade recalling all of the times
I have died and will die.
It's all right.
I dont mind
I dont mind.
I DONT MIND
Gypscoprotheres
Posts: 352
Joined: Fri Feb 18, 2011 8:43 am
Location: The Netherlands
Contact:

Re: Damage, disease or bugs?

Post by Gypscoprotheres »

Thanks for the advises. I'll try them tomorrow.
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