speedwellBiological information:

  • Common name: Speedwell
  • Scientific name: Veronica Filiformis
  • Family or class: Plantaginaceae

Symptoms and/or signs to watch out for:

  • Low growing plant
  • Bright blue stemmed flowers
  • Early in the year (March to May)
  • Small scalloped leaves

Life cycle:

  • Perennial herb.
  • Reproduces by asexually by resprouting from separated sections of stem and rhizome.

Mode of reproduction:

  • Reproduces asexually by resprouting from separated sections of stem and rhizome
  • Rarely seeds

Vectors for the pest:

  • Easily spread by pieces of plant being chopped up and left out during mowing

Overwintering habit:

  • Can grow in fields, lawns, and roadsides, in most soil conditions.

Alternate hosts:

  • Fungi
    • Alternaria linicola
    • Beet Western Yellows luteovuris
    • Verticillium dahilae
  • Aphids
    • Melon Aphid

Horticultural production information:

Preventative strategies:

  • Stem sections sometimes scattered with mowers
  • Lawn clippings in compost will spread the weed if it is not completely decomposed
  • Nesting birds can spread the weed

Threshold levels:

  • low

Control options:

Physical controls:

  • Does not grow well in shade and establishment of a dense crop population is an effective method of reducing population densities (Fitter and Ashmore)

Biological controls:

  • None

Chemical controls:

  • Broadleaf Herbicides


Historical notes from Farm to YoU NH:

Date/circumstances observed (Pictures)

Control method used, efficacy of control method

  • manual removal


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