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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Salvia > Stunted plant

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Salvia > Plant > Stunted plant

1 of 2
  • Root rot 1
  • Root rot 2
  • Root rot 3

Root Rot
Rhizoctonia solani and Pythium spp.

  • Leaves turn yellow to tan and wilt
  • Plants may be stunted
  • The base of the stem may turn brown and crack
  • Roots have brown to black sunken areas and lack root hairs
  • The outer root tissue may be easily removed leaving behind thin, stringy root cores
  • Disease common in cool, wet soil with poor drainage
  • Lab test necessary to determine which pathogen is causing root rot
  • More information on Pythium root rot
  • More information on Rhizoctionia root rot
2 of 2
  • Snapdragon rust 1
  • Snapdragon rust 2
  • Snapdragon rust 3

Downy Mildew
Pernospora lamii

  • Plants become yellow in color and stunted
  • Large brown angular blotches may appear on leaves
  • Leaves may curl slightly downward
  • Grayish brown to purplish fungal growth can be found on underside of leaves in humid conditions
  • Infected leaves prematurely drop from the plant leaving a barren stalk with few leaves
  • Cool, wet weather favors disease
  • More information on Downey mildew

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