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OfflineSpanky
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Registered: 05/21/15
Posts: 8
Loc: Prague
Last seen: 8 years, 8 months
cactus critters
    #21705511 - 05/21/15 08:02 AM (8 years, 8 months ago)

Hi,

I am calling out for help.
I inherited those cacti from my 90 years old father who wasn’t able to take care of them anymore. They were not in great shape, but relatively ok - little bit dry, little bit frost bit from last fall and beaten by hails.
I took them home for the winter, pruned away the dry leaves and added some store bought soil. They started to renew the foilage nicely.

Quite recently I noticed blisters on the freshly grown leaves and tiny thin little black bugs. Looks like some kind of scale bug. I picked them off (bugs and blisters) and sprayed the plants with Grapefruit Seed Extract.

As you can see from the pictures, I’m not very successful in healing them. Should I use soapy water?

I would be grateful for any advice

Thanks a lot
all the best from Prague, Czech Republic

Stepanka












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Offlinekosmokratorshaman
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Re: cactus critters [Re: Spanky]
    #21705519 - 05/21/15 08:05 AM (8 years, 8 months ago)

if they have healed scabs (what you are calling blisters, you should leave them. They have formed to keep out bacteria, rot, infection. The bugs you need to get rid of. Soapy water is alright, as long as you are soaking the roots. HOWEVER, I have heard that certain soaps strip the waxes from the skin, and can actually damage your cacti. More advanced cactophiles can chime in


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OfflineSpanky
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Re: cactus critters [Re: kosmokratorshaman]
    #21705610 - 05/21/15 08:51 AM (8 years, 8 months ago)

hey, thanks for quick response. Fresh blisters keep cropping out every day (as seen in the first picture), while the older ones dry and harden. Little tiny black bugs are crawling around.


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Offlinekosmokratorshaman
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Re: cactus critters [Re: Spanky]
    #21705615 - 05/21/15 08:54 AM (8 years, 8 months ago)

I was wrong man, I completely missed that first pic. I have no idea what that is


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Invisible1234go
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Re: cactus critters [Re: kosmokratorshaman]
    #21705688 - 05/21/15 09:29 AM (8 years, 8 months ago)

Do you keep it indoors or outdoors?
The scars and blisters could be from too much direct sunlight, just guessing.
Any idea what the plant itself is? Looks selenicereus? Hylocereus?


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OfflineLemnaminor
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Re: cactus critters [Re: 1234go]
    #21705709 - 05/21/15 09:42 AM (8 years, 8 months ago)

I belive it's  an Ephiphyllum

Trim whathever you feel is rotten or gone beyond recover. Leave alone small skin wounds and scarring, as it may heal alone. do you see any insects/pest feasting on your plant right now?


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                                                        "The best things in life, come covered in spines."


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OfflineSpanky
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Re: cactus critters [Re: Spanky]
    #21705750 - 05/21/15 10:00 AM (8 years, 8 months ago)

They used to live outside on my father's balcony. For winter they moved down to his cellar and this last winter I moved it into my house instead.
I just took some pics of the monsters - the bugs and the larvae, will have to shrink them on my other machine before I post them
thanks.

it is some kind of disocactus


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OfflineSpanky
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Re: cactus critters [Re: Spanky]
    #21705760 - 05/21/15 10:04 AM (8 years, 8 months ago)

I believe they are scale bugs





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OfflineSpanky
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Re: cactus critters [Re: Spanky]
    #21705770 - 05/21/15 10:06 AM (8 years, 8 months ago)

or thrips, perhaps?

how do I kill them and not the cacti?


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Invisible1234go
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Re: cactus critters [Re: Spanky]
    #21705772 - 05/21/15 10:07 AM (8 years, 8 months ago)

Interesting, there's actually a beetle called "blister beetle".

http://en.wikipedia.org/wiki/Blister_beetle


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OfflineLemnaminor
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Re: cactus critters [Re: Spanky]
    #21705778 - 05/21/15 10:09 AM (8 years, 8 months ago)

Well, seeing some flat stems, i still think it is an ephiphyllum. Anyhow he is almost certainly in the Hylocereeae tribe.

You seem to have both thrips and cochineal.


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                                                        "The best things in life, come covered in spines."


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OfflineLemnaminor
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Re: cactus critters [Re: 1234go]
    #21705783 - 05/21/15 10:12 AM (8 years, 8 months ago)

Quote:

1234go said:
Interesting, there's actually a beetle called "blister beetle".

http://en.wikipedia.org/wiki/Blister_beetle



wow, that sure explains those blisters


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                                                        "The best things in life, come covered in spines."


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OfflineSpanky
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Re: cactus critters [Re: Spanky]
    #21706650 - 05/21/15 02:34 PM (8 years, 8 months ago)

you are right, it is ephiphyllum
I freaked today, when I saw the creatures through the camera and sprayed the plants with soap solution. The scary thing was some of the tired leaves leaked green on the floor ...

I wonder if these bugs will keep coming from the outside, our apartment is in rather green area


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Invisible1234go
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Re: cactus critters [Re: Spanky]
    #21706688 - 05/21/15 02:43 PM (8 years, 8 months ago)

Quote:

I wonder if these bugs will keep coming from the outside




If you grow it, they will come. Hah.


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OfflineSpanky
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Re: cactus critters [Re: Spanky]
    #21706715 - 05/21/15 02:49 PM (8 years, 8 months ago)

actually, the more I look I cannot discern between ephiphyllum and disocactus.
Could it be the same thing?


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OfflineLemnaminor
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Re: cactus critters [Re: Spanky]
    #21706979 - 05/21/15 04:06 PM (8 years, 8 months ago)

A healthy Epiphyllum usually blooms in this period. Anyhow yours have seed better times, so the fact that it has no flowers doesen't mean that it is not
Disocactus is a different species.
Anyhow, the priority here is to save it, maybe i'm wrong, but a healty plant with flowers will surely lead us to a correct id in the future.


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                                                        "The best things in life, come covered in spines."


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Offlinekizatzhaddarak
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Re: cactus critters [Re: Spanky]
    #21706998 - 05/21/15 04:13 PM (8 years, 8 months ago)

you could try pepper-mace-tea..  and or Nicotinia. tobacco spray sometimes works too. My advice would be to (research the insect), find out how to kill them. . but I always try pepper-mace tea-spray. . then tobacco, if that doesn't work because those are natural substances. I try not to use chem-based insecticides on my plants when possible.


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The Sleeper Must Awaken!  (I do not advocate the ingestion of any substance without extensive research, and or the advice of trained medical and or spiritual personelle)




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OfflineBigHeart
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Re: cactus critters [Re: kizatzhaddarak]
    #21707421 - 05/21/15 06:36 PM (8 years, 8 months ago)

You might have to go scorched earth on those bastards and use a commercial pesticide


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OfflineLemnaminor
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Re: cactus critters [Re: BigHeart]
    #21708861 - 05/22/15 01:14 AM (8 years, 8 months ago)

Quote:

BigHeart said:
You might have to go scorched earth on those bastards and use a commercial pesticide



:onfire:


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                                                        "The best things in life, come covered in spines."


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OfflineSpanky
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Re: cactus critters [Re: Lemnaminor]
    #21708954 - 05/22/15 02:08 AM (8 years, 8 months ago)

They usually blossom little later in the summer. But they've been moved and pruned a lot this winter. Together with these pests, they might be too tired to bloom this year ...

They survived yesterday's soap blast and nothing seems to be crawling on them now. Will look with my super macro camera when I have time later today.
Thanks for all your advice and I will let you know how they are doing


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