Downy mildew on variegated leaves
|On variegated aquilegia leaves, downy mildew infection is
just about impossible to see.
...until it reaches the stage of the yellowy lesions going browny and even holes being formed as the plant tissue dies back.
Both variegated-leaved and golden-leaved aquilegias also may have new leaves produced that are already infected, look out for lighter colour, leaf curling and a smaller leaf surface compared to length of leaf-stem.
Downy mildew on golden leaves
|Here there is no obvious sign on the upper golden leaves of
this plant, but look again, closely and you'll see that the
lower leaf (LHS) is more greeny (as away from stronger sunlight)
and you can see the mottled effect of downy mildew there, shown
close-up far right..
|Likewise, these gold leaves show lighter yellow patches, with sporulation occurring on the underside.|
|When the infected patches start to turn brown they are more easily noticed... although by then many millions of spores have already been shed.|
|This leaf also shows signs of powdery mildew as well as
Can you see that part of the leaf-stem is also affected?