2007-08-27 01:18:43 · 4 answers · asked by alphecca 2 in Science & Mathematics ➔ Botany
Pyrethrum is an insecticidal chemical found in Chrysanthemum seed casings. The plants are grown commercially and the pyrthrum used alone or in combination with other chemicals.
The pyrethrum acts as a neurotoxin in large amounts to insects and a repellent in small amounts. Little effect on mammals. They are biodegradable.
I don't think you'd get rid of cockroaches by growing chrysanthemums. Better to use "house geckos."
2007-08-27 01:32:34 · answer #1 · answered by pbr p 2 · 1⤊ 0⤋
Yes! tobacco, nicotine kills insects as well as people, although, obviously, the insects don't have to smoke it.
2007-08-27 01:24:25 · answer #2 · answered by OBI 4 · 0⤊ 0⤋
Ricin is extracted from the castor bean...that'd do it.
2007-08-27 01:27:06 · answer #3 · answered by Citicop 7 · 0⤊ 0⤋
Yes, that would be the chrysanthemum.
2007-08-27 01:28:04 · answer #4 · answered by Emily R 3 · 0⤊ 0⤋