Chastagner, Gary

Tobacco rattle virus is one of the most important viruses of peonies (Paeonia spp.). Although little is known about its long-term impact on plant vigor, both cut flower and rootstock producers should ...

Pests and disease can harm peony, but home gardeners and commercial growers can learn to familiarize and manage the most common pathogens here.

This pub will walk you through how to correctly identify the diagnostic symptoms of sooty bark disease, a troubling, emerging pathogen spreading across Washington.