How can purple loosestrife be controlled

Once removed, place the plant in a black garbage bag and let it dry completely. Placing the bag in a hot, sunny location will speed up this process. Once the plant is dried out it may be burned, where permitted, or placed for disposal in the landfill. Make sure to burn the plants completely, or double bag them to avoid contaminating landfill sites. The removal area should be monitored the next growing season and beyond because there will a seed bank remaining in the soil.

There are many alternative garden perennials that can be planted in place of the purple loosestrife. Once the original infestation is controlled, new plants must be managed for several years. Long-term monitoring, vigilantly controlling newly emerging plants, and encouraging a desirable plant community will reduce reinvasion potential of purple loosestrife.

Lym, R. Purple loosestrife control with aminopyralid applied alone or with 2,4-D or triclopyr. Pp Merentz, Joe. January Peterson, Vanelle. Field Scientist retired. Dow AgroSciences. Biology and Biological Control of Purple Loosestrife.

Forest Health Technology Team. Online bugwoodcloud. Milestone and Vastlan herbicides are not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Label precautions apply to forage treated with Milestone and to manure from animals that have consumed treated forage within the last three days.

Consult the label for full details. Always read and follow label directions. Active ingredients for herbicide products mentioned in this article: Milestone herbicide aminopyralid , Vastlan herbicide triclopyr-amine , Rodeo glyphosate , and 2,4-D 2,4-Dichlorophenoxyacetic acid.

TechLine Online is a digital publication featuring new, innovative, and proven science-based information for invasive plant managers. Invasive Plant Management. By , however, we had more than 40 wild populations.

Purple loosestrife has showy purple spikes of flowers, making it an attractive garden flower. The use of purple loosestrife in landscape plantings and flower gardens has added to its spread in Missouri. Purple loosestrife is aggressive and will crowd out native plants that are used by wildlife for food and shelter.

Purple loosestrife has almost no value for wildlife food or shelter. Once established it can destroy marshes, wet prairies and clog up waterways. Purple loosestrife now occurs primarily in the northern half of the state with higher concentrations along the Missouri and Mississippi Rivers. However, the plant can be found scattered anywhere throughout Missouri.

The purple spikes are showy from late June or early July through late August. Look for it in marshes, wet prairies, along streams, around farm ponds, and in moist fields, pastures, and roadside ditches. Purple loosestrife spreads rapidly by the very numerous seeds , per plant or more produced annually.