Viewing post #1092982 by sooby

beckygardener said:

And I have also read that the dark blue-green foliage seems to be the most resistant to pests and possibly rust. Is this true?

I've heard that too but there doesn't seem to be any evidence to support it. If the "blue-green" is from extra wax on the outside of the leaf then it's possible it might be more resistant to some problems but not very likely to apply to all pests, and no reason I can think of why it should apply to rust which enters the leaf through the stomata anyway.