Armyworms

The larvae will feed during springtime and then pupate for two weeks. It is in this feeding period that the larvae cause the most destruction. Plants may be entirely devoured and field crops decimated if an infestation occurs. This will happen over a very short period of time, overnight or in just days.

When the Armyworms have devoured a field or area, they will move together to a new area with fresh food. It is due to this movement as a large group that they received their name.

Share |

Facts

Identify Damage

Control Options

Description | Reproduction | Habitat

So... What's an Armyworm?

Adult armyworm moths are tan, light brown or grayish-brown in color and have a 1 1/2" - 2" wingspan. On each of their front wings they have a small white dot, identifying them.

The larvae or caterpillars are brownish or greenish in color with dark and light stripes along the length of their bodies. Eggs, which are a greenish white color, are laid in large groupings on the undersides of foliage leaves.

First generation caterpillars cause the most damage in an area.

[back to top]

Reproduction Patterns of Armyworms

Armyworms spend the winter as mature lavae or in a pupal stage amid plant debris or down in the soil itself.

The larvae will feed during springtime and th Armyworm in the soil en pupate for two weeks. It is in this feeding period that the larvae cause the most destruction. After pupating, they will emerge as moths ready to mate, lay eggs, and continue the cycle.

There can be anywhere from 2-3 generations per year, with some areas having 4 if the conditions are favorable.

[back to top]

Armyworm's Habitat

These destructive pest are found east of the Rocky Mountains in the United States and southern Canada, although they have also been found in the extreme southwestern U.S.

They can be found in agricultural fields as well as golf courses and homeowners' backyards. They feed during the nighttime, and spend their days hidden in the plants or under plant debris.

When they have devoured a field or area, they will move together to a new area with fresh food. It is due to this movement as a large group that they received their name.

[back to top]

Share |

Images courtesy of Oklahoma State University and Forestry Images.
For a complete list of content sources please visit our site bibliography page

Safer®Brand brings you a variety of effective insect control products that are gentler on the environment! Most of them proudly display the OMRI Listed® organic seal and comply for use in organic gardening!