Aster Wilt (stub)

Quick Intro

Physical Description

 

Species & Taxonomy

  • Kingdom:
  • Phylum:
  • Class:
  • Order:
  • Family:
  • Genus Species: Fusarium oxysporum f. sp.  callistephi

Plants Affected

 Aster family plants:

Plants Unaffected

 

Geographical Range

 

Signs & Symptoms

Whole Plant

  • rapid wilting of the plant, often followed by death
  • stem base blackens and shrinks inward
  • faint, furry, pale pink or white fungal growth may develop

Leaves

Flowers

Fruit

Roots/Tubers

How to Positively Identify

 

Treatment

  • promptly remove and dispose of infected plants and the soil in the vicinity of the roots
  • Fusarium can be killed with high heat, but most techniques of heating the soil don’t go deep enough into the soil
  • try soil solarization

Prevention & Control

Treatment is very difficult, so controlling the spread of the fungus is important:

  • promptly remove and dispose of infected plants and the soil in the vicinity of the roots
  • Use a fresh site for future plantings of asters and plant only healthy-looking stock
  • discard any with dead roots or damaged stem bases
  • avoid planting asters on heavy soils, or improve soil texture before planting
  • grow resistant cultivars

Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.