Many manufacturers market pyrethrin insecticides, but these solutions are often synthetic versions that have added chemicals.

What Is Pyrethrin?

cinerariifoliumto use as a natural organic pesticide.

Person spraying pyrethrin pesticide onto a garden plant

The Spruce / Jayme Burrows

The combined extraction containing multiple pyrethrins is sometimes called “pyrethrum.

However, while pyrethrins are considered organic pesticides, pyrethroids are not.

Safety Considerations

Pyrethrin insecticides are biodegradable and will break down within a few days in direct sunlight.

Materials needed to make pyrethrin pesticide

The Spruce / Jayme Burrows

Pure pyrethrins have low toxicity to humans and pets.

Some people have skin sensitivity to these compounds, and oral consumption can lead to digestive distress.

You should use proper caution when mixing and using pyrethrin insecticides.

Person harvesting daisies for use in homemade pesticide

The Spruce / Jayme Burrows

Remember that pyrethrin is highly toxic to most insects.

It is not wise to broadcast spray pyrethrum on all your plants.

Use the insecticide as a spot treatment only when and where you have a pest outbreak.

Transferring the flower heads to an air tight plastic container

The Spruce / Jayme Burrows

However, in some cases, the insecticide available for sale may bepyrethroids,which are not organic.

You will also need a garden with some actively growingChrysanthemumcinerariifoliumplants.Not just any daisy will do, as onlyC.

cinerariifoliumcontains the pyrethrins that make for an effective homemade insecticide.

Using a mortar and pestle to grind the flower heads

The Spruce / Jayme Burrows

The Dalmatian daisy is a popular cut flower.

it’s possible for you to also apply powder to the soil.

Thus, it’s best to grind and mix the insecticide in relatively small amounts as needed.

Straining the solution through cheesecloth

The Spruce / Jayme Burrows

Spray the Insecticide

Pyrethrins are highly toxic to aquatic life, including fish and insects.

In addition, they can negatively affect beneficial insects such as honeybees, reducing their motility and collapsing colonies.

However, pyrethrins break down very quickly so the effects may be minimal.

Spraying homemade pyrethrin pesticide onto a garden plant

The Spruce / Jayme Burrows

Pyrethrin lasts one to two days before it begins to degrade.

If you use a commercial spray, consult the label to find out the recommended usage.

Pyrethrins vs. Pyrethroids: Whats the difference?MGK/Sumitomo Fact Sheet.

Pyrethrins General Fact Sheet.Oregon State University Extension Services.

Less Toxic Insecticides.Clemson University.

Home Preparation of Pyrethrum.McGill University Ecological Agriculture Projects.

Pyrethrins General Fact Sheet.

National Pesticide Information Center.

Public Health Statement on Pyrethrins and Pyrethroids.Centers for Disease Control and Prevention (CDC).