When Rose Diseases Aren't: William, I guess I'm going to have to take some pictures of the

» Mark_Whitelaw - William, I guess I'm going to have to take some pictures of the

William,
I guess I'm going to have to take some pictures of these problems for uploading. Right now, I don't know of any available on the internet.

The best example of phytotoxicity I can think of is a brown tip at the terminus ("pointed end") of the leaflet. The brown will travel up on either side of the main rib and usually be a mirror image of the damage on either side.

Heat stress, however, usually looks live severe iron or magnesium chlorosis. Leaves will be extremely yellow or even white. The leaf ribs will likewise be light green.

MarkW>Ft. Worth, TX/Zn 7b, Rose Garden

-- posted by Mark_Whitelaw