Aphidius matricariae

Aphidius matricariae

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Aphidius matricariae is a parasitoid predatory wasp widely used in aphid control. They are mainly used to control tobacco aphids and peach-potato aphids primarily.
Rather than eating the aphids, A. matricariae lay their eggs inside of the aphid, using their body as a nursery. When the deposited eggs hatch and become larvae, the aphid becomes the food source as they feed on them from the inside, turning the aphid body into a swollen, leathery, grey to brown mummy. Two weeks after the introduction of the egg, an adult wasp emerges from the mummy to hunt.

Working conditions
Temperature: 65-80 F
Humidity: 60-80

 The information given below is merely indicative. Tailored advice can be provided if information is available on the local factors that need to be taken into account, such as the crop, the climate conditions and the level of infestation. For the correct approach, please consult a Shale Peak Horticulture specialist.


light curative

heavy curative









Interval (days)






min. 3x

min. 6x






 Option 1: Preferred option. Walk throughout the grow area, holding bottle horizontally and open. Allow wasps to emerge. Cap bottle and wait until more wasps have emerged from the mummies and repeat. This may take several days.

Option 2: Spread contents onto rockwool or growing media in areas that will remain dry for several days. Alternatively, pour contents into BugBoxes and distribute throughout crop by hanging them on branches close to the center of the plant. The lower humidity may cause less chance of emergence.

Biological beneficials have a very short life expectancy and therefore need to be introduced into the crop as soon as possible after receipt. Failure to do so can have a negative impact on their quality. In case you do need to store the product, please follow the instructions below. Shale Peak Horticulture, LLC is not liable for any loss of quality if the product is stored longer and/or under different conditions than recommended.

  • Storage after receipt: 1-2 days
  • Storage temperature: 8-10°C/47-50°F
  • In the dark


  • Only use products that are permitted in your country/state and crop. Check local registration requirements.
  • Shale Peak Horticulture, LLC cannot be held liable for unauthorized use.
  • Shale Peak Horticulture, LLC is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions.