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General Environmental Science Science Fair Project

Controlling Purple Loosestrife

Controlling Purple Loosestrife | Science Fair Projects | STEM Projects
We're testing if we can get rid of a foreign plant, Purple Loosestrife, without hurting our crops. We'll be using two types of beetles to see if they can help us out.


The hypothesis is that the two types of beetles can help us get rid of the Purple Loosestrife without harming our crops.

Method & Materials

You will mark the top of the petri dish into six even quadrants, place the filter paper in the petri dish and wet it, and hole punch six of each plants being tested. You will also release five beetles and five larvas into each dish.
You will need petri dishes, filter paper, plants, and beetles and larvas.


The results showed that the two types of beetles are host specific to the Purple Loosestrife and will not feed on agricultural crops. This means that they can help us get rid of the Purple Loosestrife without harming our crops.

Why do this project?

This science project is interesting because it is testing a way to get rid of a foreign plant without hurting our crops.

Also Consider

Experiment variations to consider include testing different types of beetles and different types of plants.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!
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