https://c8.alamy.com/comp/2CKFBTP/this-image-shows-the-advanced-stage-of-powdery-mildew-affecting-the-leaves-of-a-pumpkin-powdery-mildew-is-a-fungal-disease-that-affects-a-wide-range-of-plants-powdery-mildew-diseases-are-caused-by-many-different-species-of-fungi-in-the-order-erysiphales-with-podosphaera-xanthii-being-the-most-commonly-reported-cause-common-on-pumpkins-cucumbers-courgettes-and-other-members-of-the-squash-family-2CKFBTP.jpg