this says it all
http://www.bugspray.com/article/thrips.html

Jeff, Southeast Michigan, zone 5
"YMC" wrote in message
u...
Hi,

Some of my roses have been infected with thrips - you can see the effects
on the lightly colored ones, esp. the white ones.

One in particular keeps on getting a bad case of rust.

Its currently winter now in Melbourne Australia.

Apart from the usual measure -

1. clear out dead leaves
2. Pruning
3. Spraying area with lime.

What other things can I do. And what effective sprays do some people use
to deal with thrips?

Thanks.