The grape may have a bit of harmless mildew, but judging by the distribution it looks like you have have a hairy variety that looks especially fuzzy on the new growth.
Looks pretty natural and healthy to me.
Its pretty normal for many artemisia species to have silver/gray/white colors on the underside of matured foliage.
To me both plants look healthy and not infected with fungus.
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The grape may have a bit of harmless mildew, but judging by the distribution it looks like you have have a hairy variety that looks especially fuzzy on the new growth.
Looks pretty natural and healthy to me.
Its pretty normal for many artemisia species to have silver/gray/white colors on the underside of matured foliage.
To me both plants look healthy and not infected with fungus.
Grapes can be naturaly furry. Totaly normal.