That just means the active ingredient was derived from nature. Don't assume that means it is automatically safe to use. Pyrethrin is natural but you difinately don't want to spray too much in a poorly ventilated area.
generally organic
Diazinon (insecticide) is an organic compound.
A zineb is an organic fungicide and insecticide.
it is generally inorganic
DDT
A horticultural oil or an insecticidal soap is a sample name of an insecticide. An insecticide is used to control insect populations. The two examples given are organic controls because of their non reliance on chemicals and synthetic ingredients.
Diatomaceous Earth is used as an organic insecticide, as a flea treatment, and as a wormer.
The leaves are insecticidal (and also toxic to other animals) due to high levels of oxalic acid. However the stems have no insecticidal or other toxic properties as they contain no oxalic acid.Coffee grounds are a much better safer organic insecticide as they are toxic only to insects, not other animals.
If your roses have aphids spray with an insecticide. If you are organic use soapy water or wash off with a hose.
There are lot of different forms of pyrethrum insecticide. Dusts, sprays, and coils are mostly used. If in search for organic, make sure that plants were not grown with herbicides, fungicides etc., essence wasn't extracted with hexane and that no PBO was incorporated.
the prefix of the word insecticide is -in
use the systemic insecticide or the common spray insecticide. but better you use the systemic insecticide.