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09:11AM, 22 Oct 2009
Answer: Hardenbergia can develop leaf spots which can b...
Category: Diseases
09:11AM, 22 Oct 2009
Medium_3 Sick lilly pilly hedge - bottom 1/2 to 1 meter of whole hedge has disease/pest infection. sooty/yellow colou

I have a large lilly pilly hedge about 8 years old. the bottom 1/2 to 1 meter of the hedge across its full length is covered in sooty/slightly yellow material with little black spots. leaves eventually get completely covered and die. AM worried its spreading and I will loose the plants!
Help!!! I've treated them with copper sprays, sulfur sprays and recently diluted metho....not sure what I need to do to help them! They are also being chewed by something...

Submitted: 06:37PM, 13 Jul 2017
Answer: Hi Danielle,

Thank you for contacting Yates.

It seems your lilly pilly has been affected by two different pests. The eaten edges suggest that it may have been attacked by green stripe leaf beetle- Paropsides calypso for which we currently do not have a registered product as a control.

However the sooty mould on the leaves suggests that the tree might have been attacked by sap sucking pests like scales, aphids and mealy bugs. To control them you can use Yates Pest Oil. It’s available in both a convenient ready to use spray and a concentrate form. For more info, click here:

A good feed with Dynamic Lifter Soil Improver & Plant Fertiliser will also help improve plant health, immunity and boost foliage growth.

Hope this information is helpful, if you have further queries do let us know.

Kind regards,

Yates Horticulturalist

Answered: 05:17PM, 14 Jul 2017


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