Where do i find the death daisy on sims 2 castaway ps2?

i am on the 2 island and i still don't have the death daisy posion, and i really want it wil someone tell me where it is?

Where do i find the death daisy on sims 2 castaway ps2?
The death daisy only appears when a sim has died. Grows from the gravestone.
Reply:When a sim dies, you mourn on their grave and after a while, the death daisy grows on the grave