"cristina" wrote in message
...
Do anyone knows what kind of disease this is?

The younger leafs fall down on touching and they have this strange
design....

http://www.geocities.com/artyard/pia.../malattia1.jpg


That looks a whole lot like downy mildew, a VERY serious fungal problem. It
spreads like wildfire and is very difficult to eradicate. The chemicals that
control it are very expensive to buy (check out SubdueMaxx at
www.rosemania.com) Your best bet is to radically cut off all of the new
growth you can and bag it up and throw it away. Copper fungicides have some
reported effictiveness, but I wouldn't bet on them totally eradicating it.
It hides in the leaf axils, just waiting on the temperatures to be correct
to spring forth again. Many rosarians who can't afford the high priced
chemicals will cut a rose to the ground in order to try to elimate it from
their gardens. It can kill whole rose gardens left unchecked.

Sunflower
MS 7b