These mainly rounded shrubs, wider than they are tall, have handsome leaves showcasing the gorgeous flowers. P. delavayi is upright and vase-shaped. Tree peonies lose their leaves in winter. All the ...
Bob Stefko Herbaceous peonies (Paeonia lactiflora) are among the easiest flowering plants to grow. One key to success is knowing when to cut back peonies and how to properly make your cuts.
Later in summer there is an increased risk of infection as more airborne spores are released from infected plants. Botrytis paeoniae forms black, seed-like resting structures (sclerotia) in the ...