|Nerium oleander-photo released to the public domain by author|
It is called Ganneru in Telugu,Arali in Tamil and Kaner in Hindi.Care must be taken with children around these plants.
There is a herbal insect killer which can be made with the leaves of these plants making use of the toxic properties.
A few leaves of this plant are boiled in water and sprayed where there are insects .The insects disappear after spraying this poisonous herbal based formula.This is a herbal insect repellent but it is also poisonous.Care must be taken to wash off residues of this spray and it should not be sprayed around food stuff. Here herbal only means that it is plant based .
-As told by Panditha Elchuri.