How to Manage Pests
Pests in Gardens and Landscapes
Phytophthora root rot—Phytophthora spp.
Aboveground symptoms of Phytophthora root rot are typical of plants with a weak root system; infected
plants are slow growing and may wilt or die in hot weather. Roots may have water-soaked injured areas
that gradually dry and turn chocolate brown as the disease progresses.
Avoid prolonged saturation of the soil or standing water. Provide good soil drainage. Raised beds provide
good drainage in gardens.
For more information, see the Phytophthora
Root and Crown Rot Pest Note.
of inner root tissue