[jhouse]

I googled this, and mostly found people suggesting which varieties are most resistant.

But what I'm curious about, is what exactly does that mean? Are the leaves of the plant less likely to have the fungal disease spread on it somehow?

Or, are they developed so that they have quickly growing new growth, so that they "outrun" the disease but having plenty of growth as the grower prunes away diseased leaves?

Thanks if anyone happens to know about this.

Jan H.