Olpidium on Leafy Greens Olpidium species, particularly Olpidium brassicae and Olpidium virulentus, are significant pathogens in greenhouse environments due to their ability to act as vectors for plant viruses and their direct pathogenic effects on plant roots. Here’s how Olpidium affects various leafy greens commonly grown in greenhouses: Common Leafy Greens Lettuce (Romaine, Butterhead, Leaf […]