Aphidius colemani is a tiny parasitic wasp (2–3 mm) widely used for natural control of several common aphid species. Effective for both preventative and curative applications, it parasitizes young aphids to provide consistent, long-term population management. Active all year and unaffected by short day length, A. colemani is well-suited for greenhouses, outdoor crops, nurseries, and controlled environments.
How It Works
Females locate aphid colonies using plant distress signals and feed on honeydew. They inject an egg into young aphids; as the larva develops, it consumes the host from within, turning it into a hardened brown or gray mummy. Adults emerge from the mummies and immediately search for new aphids to parasitize. In addition to parasitism, they also feed on honeydew for energy and survival.
Targets These Aphid Species
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Melon Aphid (Aphis gossypii)
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Cotton Aphid
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Green Peach Aphid (Myzus persicae)
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Tobacco Aphid (Myzus nicotianae)
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Bird Cherry-Oat Aphid (Rhopalosiphum padi)
For broader control, pair with Aphelinus abdominalis or Green Lacewings.
Ideal Conditions
Application Instructions
Preventative Use
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Open the container in the crop area and allow emerged adults to fly out while walking through plants.
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Recap between uses and keep at greenhouse temperatures.
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Repeat daily for 2–4 days until full emergence.
Corrective Use
Blister Packs
Release Rates
Where to Use
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Greenhouses
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Outdoor Crops
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Orchards & Vineyards
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Nurseries
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Grow Rooms
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Hydroponics / Aquaponics
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Interiorscapes
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Container Plants
Shipping & Storage
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Ships via overnight service (Tuesdays only)
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Order by Wednesday for following Tuesday shipment
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7-day minimum processing time
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Store in darkness at 42–46°F if not releasing immediately
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Do not refrigerate after emergence
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Use within 18 hours of receipt
Quick Tips
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Release early for best results
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Avoid pesticide sprays during release
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Do not empty mummies from tubes—humidity is critical for emergence
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Compatible with most aphid IPM programs
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Pair with Aphelinus abdominalis for expanded host range
