Biological Control of Purple Loosestrife - Aquacide


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Biological Control of Purple Loosestrife

Published by Andy Markoe on March 12, 2019 0 Comments

purple loosestrife

Purple loosestrife, scientifically known as Lythrum salicaria, is considered to be a perennial, herbaceous weed which is commonly found along all the waterways as well as throughout wetland habitats. This weed was first introduced in Europe, somewhere during the 1800s where it was found either in the shop ballasts or as an ornamental. This kind of weed can also be found in many areas in the United States. Considering many factors, this weed is legislated for eradication.

The recognition of purple loosestrife for eradication:

Purple happens to be a large plant that grows up to a length of 3 meters tall. The inflorescence looks like a spike of a number of showy magenta flowers which are set in the cluster-like arrangement. Each flower of the weed comprises of 5-7 petals that have a small yellow center. The stems of this weed are woody in nature and have a square-like shape along with 5-6 sides. Purple loosestrife is considered to be abundant seed makers as one mature plant that is able to produce millions of seeds.

The effects of purple loosestrife:

Once the weed is fully established, purple loosestrife crowds out native vegetation. This often creates a monoculture. Along with the loss of this weed also has ill effects on all kinds of waterfowl nesting habitat and the same can harm a lot of algal communities and some amphibians. This weed also reduces water flow and its quality. Other negative effects of this weed are inhibition of the transportation, degradation of the activities like fishing and degradation recreation areas.


One way to control the long term prevalence of the purple loosestrife is biologically with AquaClear Pellets which are microorganisms that consume the nutrient rich “muck” and sediment that the purple loosestrife and other weeds like cattails and water lilies thrive in.  The AquaClear Pellets are a great way to improve water clarity and cut down on sulfur odor and stench in the area.

Chemical treatment is also very effective and easy:

Pellets with 2,4-D are a great way to treat the purple loosestrife as well as cattails and lilies without affecting the habitat around such as fish and wildlife.  They are systemic so they will eradicate the root system over time.

Read what our customers have to say about our products:

Review for AquaClear Pellets

“As always, the AquaClear pellets work fantastic and customer service is excellent. Very quick delivery as well!".

- James R.


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