Brown/Black sucking bugs on my swan plants

This topic contains 3 replies, has 3 voices, and was last updated by  Sandra 6 years, 2 months ago.

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  • #32858

    Sandra
    Participant

    Hi there I have just joined as a member.  Can anyone tell me what the brown sucking bugs are on the storks of my swan plants they look like just a black or brown shell like thing I don’t see them moving but they are slowly killing my plants.

    Thanks

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  • #32864

    Sandra
    Participant

    Sorry I can’t send a photo but I googled scale bugs and that is exactly what they are.  I have been squashing them with by fingers just like I do with aphids.  I have alot of ants around and those wasps that eats the eggs and caterpillars.  As soon as an egg is laid the ants or wasps eat them it is so frustrating so I bought a caterpillar castle and I finally have a couple of caterpillars.  The castles are great.  Thanks.

    #32862

    BlueSkyBee
    Participant

    They could also be scale insect if they don’t move. Definitely a photo would help. Often scale insect will attack heat stressed plants, so a bit of extra watering probably won’t go astray, and you can squash the scale insect with your fingers (the actual insect lives under the shell) and often ants will carry them onto the plant, as they feed off the sweet honeydew the scale exudes, much the same way as ants ‘farm’ aphids.

    #32859

    Jacqui
    Keymaster

    Hi Sandra – a photograph would help. To me – lots of experience but really need to know more about your situation – they sound like aphid mummies. Are some of them bright orange (Aphids or Aphis nerii)?

    Read more about them here. The mummies are “good” for your swan plants.

    https://www.monarch.org.nz/wp-content/uploads/2008/12/aphids-fact-sheet.pdf

    Can you send in a photo, to photos@monarch.org.nz?

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