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common weed seeds in kansa

Definitions

The Threats from Invasive Species is described by the Center for Invasive Species and Ecosystem Health.

Things We Do

The "Quarantine" column designated plants that are prohibited from being moved into the state or moved within the state. Those species are regulated by the Kansas Department of Agriculture. Furthermore the state’s Federal Noxious Weed Quarantine (PDF) prohibits the movement of Federal Noxious weeds into the state or within the state..

The "Noxious" column designates plants listed in the State Noxious Weed Law (PDF). The Kansas Department of Agriculture is responsible for the administration of the state Noxious Weed Law. Those that are noxious statewide are marked as "state noxious" Those noxious by county are marked as "county noxious".

The National Invasive Species Council (NISC) Invasive Species Advisory Committee (ISAC) defines an invasive species as:

Bushy wallflower, or treacle mustard, (Erysimum repandum) is a common weed in central and eastern Kansas. It is native to Eurasia. It usually emerges in the fall and forms rosettes with long narrow leaves and irregular leaf margins. Most vegetative growth occurs during the spring. Bushy wallflower rosettes bolt in the spring and bear bright yellow flowers at the top of the plant, which only grows to about 12 – 18" tall. Seeds are produced in long, narrow seed pods.

Field pennycress

Bushy wallflower (treacle mustard)

Figure 3. Bushy wallflower, or treacle mustard.

Tansy mustard and flixweed are two similar mustard species common in central and western Kansas. These weeds emerge in the fall and grow as a rosette with finely lobed compound leaves. Tansy mustard and flixweed bolt in the spring. Small orange seeds are produced in long, narrow seed pods. Seed pods of tansy mustard are usually about 1/2 inch long and thicker than flixweed seed pods, which are generally 1 to 1 1/2 inches long.

Figure 2. Flixweed.

Flixweed (Descurainlia sophia) is very similar to tansy mustard, and often confused with it. It is an introduced annual or winter annual species from Eurasia which reproduces by seed. Stems are erect, branched, and 4 – 40" high. Flixweed often grows taller than wheat, while tansy mustard generally does not. Leaves have a lacy appearance. The stem and leaves are covered with fine hairs. Flowers are small, pale yellow, and grow in small clusters. Although tansy mustard is native to the area and flixweed is introduced, flixweed is probably the more common weed problem in wheat fields.

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A book that is great for determining native trees to add to your landscape.

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I’ve included links to purchase some of my favorite books on landscaping with native plants.

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Good book to help determine native replacements for non-native trees/shrubs.

Seeds are sold by the packet.