Downy Mildew of Viburnum

Commonly-affected plants:        Viburnum ‘Awabuki’, Viburnum suspensum Downy Mildew of Viburnum, caused by the fungus Plasmopara viburni, is a common foliar disease of viburnum. This fungus requires cooler temperatures and high humidity and/or rainfall…

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Mushroom Root Rot

Mushroom Root Rot is a common disease of many trees and shrubs caused by the fungus Armillaria spp. This fungus spreads through root-to-root contact of infected and healthy plants, as well as…

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