Conditions for an infestation
White flies love warm climates. Infestation occurs most often in late summer or early autumn. In unusually warm weather, however, the occurrence can shift to spring.
Symptoms
- Honeydew on the leaves
- small white flies on the underside of the leaves
- ring-shaped oviposition
- later white or greenish-yellow larvae that move slowly
- later immobile, pox-like larvae
- Elevation when touching the boxwood
- Sooty as Secondary illness
also read
- Damage to the whitefly
- Fighting whiteflies on strawberries
- Driving white flies out of the greenhouse
measures
- Spray on rapeseed oil
- Predators
- Yellow panels
Spray on rapeseed oil
An effective home remedy for that white fly is rapeseed oil. Mix this with water, fill it into a spray bottle and apply the agent to the underside of the leaves in the early morning or late evening hours. You may have to repeat the application several times. If you would like to find out more about treatment with rapeseed oil, see this link all important information.
Predators
The parasitic wasp is a very useful insect in your garden. It feeds on the whitefly, but does not pose a threat to your plants. You can obtain an initial stock from a specialist retailer. However, you can only use the parasitic wasp for a limited time during the year.
Yellow panels
Not pretty but useful, yellow panels are yellow pennants with a sticky coating. You hang these up near your box trees. Since white flies are attracted to the yellow color, they will get stuck on the boards.
Note: If the household remedies mentioned do not help, you should inquire about biological remedies in specialist shops. These are always preferable to chemical fungicides.
