Mealybugs, which are popularly known as mealybugs, are among the most difficult plant pests to control because of their protective hair. With our tips, however, you can quickly get rid of the bugs on the hydrangea.
If the hydrangea is infested with mealybugs, quick action is required
appearance and damage
Mealybugs are easily identified by the fine white web that surrounds the insects. The animals, which are about one to five millimeters in size, can be found on all parts of the plant. They feed on plant sap and release a toxin in their saliva that inhibits plant growth. The affected leaves turn yellow and fall off. If the infestation is severe, the hydrangea will inevitably die.
causes of the infestation
If indoor hydrangeas are attacked by scale insects, you usually brought the lice in when you bought another plant. If the room air is dry or there are longer, dry periods in the summer months, the animals can multiply in large numbers and cause major damage. Frequent airing and regular spraying of the plants can prevent infestation.
fight mealybugs
With our effective measures, you will quickly get rid of the harmful insects.
Biological control by predators
Ichneumon wasps, ladybirds and lacewings are among the natural enemies of mealybugs. You can buy these beneficial insects in specialist shops and expose them directly to the plant both outdoors and indoors.
Effective home remedies for mild infestations
You can make an effective and environmentally friendly spray against mealybugs on the hydrangea yourself. Mix:
- 12 g paraffin oil
- 1 liter of water
- 10 drops of dish soap
and pour the solution into a sprayer. Spray the hydrangea thoroughly with this mixture at least once a week.
Chemical control
In the case of a very severe infestation, it is sometimes necessary to use chemicals to save the hydrangea. Modern insecticides are compatible with plants and yet very effective. Thoroughly wet all parts of the hydrangea plant so that all lice are really destroyed. Many agents have to be used several times to reliably kill the mealybug eggs.
tips and tricks
Since mealybugs multiply explosively, the neighboring plants of the hydrangea could also be infested. You should therefore always check them and take appropriate countermeasures at the first sign.