Grow\'Em Plant Propagation Database
Custom Search
main index
plants index

propagation techniques


growth media

growth enviroment

Seed - General
Chipping Seed
Soaking and Pricking
Pre-sprouting Seed
Stratifying Seed
Cuttings - General
Stem Cuttings
Heel Cuttings
Root Cuttings
Leaf Cuttings
Rooting Hormone
Rooting with Vitamin B1
Rooting with Willow Extract
Dividing Plants
Dividing Orchid Pseudobulbs
Simple Layering
Air Layering
Tip or Trench Layering
Serpentine Layering
Bulbs - General
Bulb Chipping
Bulb Scaling
Twin Scaling
Grafting - General
Cleft or Wedge Grafting
Bud Grafting
Whip Grafting
Side-veneer Grafting
Plants of Home and Garden
Trees and Shrubs
Fruits and Vegetables
Herbs
Grains and Grasses
Cacti and Succulents
Water Plants
Bonsai
Orchids
Growth Media
Soil
Sphagnum and Peat Moss
Manure, Nitrogen, Potassium
Perlite
Vermiculite
Compost
Making Compost
Compostables
Constructing a Compost Bin
Indoor & Vermicomposting
Compost Tea
Composting Problems
Fertilization
Foliar Feeding
Green Manures
Bone Meal & Other Additives
Manure, Nitrogen, Potassium
Containers and Enclosures
Pots & Potted Plants
Biodegradable Pots
Raised Beds
Cold Frames
Cloches
Water and Irrigation
Drainage
Lighting
Artificial Light
HID Lighting
Aquarium Lighting
On Photosynthesis
Mulches
Synthetic Mulch
Floating Row Covers
Favorite Gardening Sites
General Information
Specific Interests
Seeds and Seed Catalogs
Nurseries
Gardening Tools
Garden Design
Miscellaneous
header, pests and organic pest control

image gallery

header, plant of the week

Organic Pest Control
plant hardiness zone maps

plant of the week
image gallery

links

Aphidius wasps

Aphidius wasps are small, commercially available parasitic wasps that prey on various aphid species. Aphidius matricariae is especially effective against green peach aphids though not very effective others. Aphidius colemani is effective against a much larger selection of aphids, including both the green peach aphid, and the melon or cotton aphid. Neither is effective against potato aphids or foxglove aphids.

Aphidius is slow to respond to outbreaks of aphids, and so should either be used on a regular basis (weekly or biweekly) to prevent such outbreaks, or at the first sign of an outbreak. Use in conjunction with other methods when dealing with severe aphid infestations: it combines well with Aphidoletes aphidimyza, a predatory midge, with ladybugs, or with insecticidal soaps.

Aphidius is most effective with temperatures of 21C/70F or above. Like all parasitic wasps, Aphidius requires moisture, food, and shelter. So-called banker plants are also useful: rye plants (often potted) used to host cereal aphids. Cereal aphids do not attack fruits and vegetables, but do provide hosts for the Aphidius wasps. For banker plants to be effective, they should be placed every few metres.

Aphidius wasps may be used year-round. They should not be refrigerated, but released immediately upon arrival. Like other parasitic wasps, it is very sensitive to insecticides.

 
See Also

Ladybug, ladybirds, convergent lady beetles
Organic insecticides
Parasitic wasps

Related Topics

Fruits and Vegetables
Rye, winter rye
Aphid
Insecticidal soaps

 
Don't see what you're looking for? Try our Search function.