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What is in dishsoap that plants like??

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What is in dishsoap that plants like??

Post  middlemamma on 8/24/2010, 6:48 pm

I have read many places to use dishsoap in various home made solutions for gardening. ie bug repellant etc....WHAT IN THE WORLD is it about dishsoap that is good for plants? Anyone know?
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Re: What is in dishsoap that plants like??

Post  camprn on 8/24/2010, 7:11 pm

My understanding is that when dish soap, such as Dawn, is mixed with water and sprayed it is an insecticide and benefits the plants by destroying the soft bodies (cell disruption?) of bugs/caterpillars, aphids.
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Re: What is in dishsoap that plants like??

Post  Chopper on 8/24/2010, 7:45 pm

Although camprn has probably hit the nail on the head, it may also be that dish soap acts as a surfactant - making water "wetter" and thereby also drowning the little buggers - disrupting the surface tension of the water. I may be wrong, but I say it with such authority...

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Re: What is in dishsoap that plants like??

Post  Furbalsmom on 8/25/2010, 2:32 pm

Just read an article on soapy sprays and it indicates that the soap damages the skin or shell of the insects and causes them to dry up. It also suggested that you add both dish soap and a little oil to your water to help the spray stick on the leaves.
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