adult of Dark winged fungus gnat, Sciaridae on the soil. These are common pests that damage plant roots Stock Photo Alamy Powdery Mildew on Landscape and Garden Plants Home & Garden Information Center Heath (Cornish) Cornish Heath Wild Flower Finder Dryas octopetala, or eight petal mountain avens, in the stage after blooming but before the seed head's feathery plumes begin to twist. Pollen from Dryas species is often used in climate studies, as