Unsurprisingly the USA also seems to be full of powdery mildews. The Gallery below shows a small selection of those that have been lucky enough to be photographed by myself.
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- Young Mahonia sp.
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- Acer sp. heavily infected.
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- Lupin powdery mildew
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- Acer platanoides
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- The Grapevines were thankfully disease free,
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- Portland’s Rose Garden had many beautiful plants, but powdery mildew was also present.
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- More rose powdery mildew.
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- Basil powdery mildew growing at the roadside.
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- Powdery mildew on basil again.
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- Sweet pea are common roadside plants here and powdery mildew seems to follow them.
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- A healthy Heuchera.
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