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black caterpillars on my silverbeat

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Author Topic: black caterpillars on my silverbeat  (Read 4063 times)


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black caterpillars on my silverbeat
« on: October 12, 2009, 07:24:35 AM »
HI all

i am new to this forum but looking for info on black caterpillars. I have sprayed pyrethrum with chilli and garlic that i bought from bunnings, but it doesn't seem to work. i have black caterpillars that are eating through my silverbeat, and a little of my mint, that seems to be the only thing that is getting really destroyed, but my lettuce and rocket are coming up so i assume they will be next.

what can i use that is organic and stops these guys from destroying my silverbeat?

i also ahve green and brown grasshoppers, although they have pointy bodies rather than the normal roundish type body, do they eat the leaves as well?


David Corkill

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Re: black caterpillars on my silverbeat
« Reply #1 on: October 13, 2009, 01:02:10 AM »
Rotenone can help against caterpillars. A product such as "Derris Dust" has rotenone as the active ingredient. There may be other powders with rotenone also.

Be careful. Although it is a natural plant-based poison, rotenone will kill worms and fish. Use sparingly.


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