What are the common pests of hibiscus? A full analysis of solutions

Flowers & Gardening Jan 1, 1970 0 views

This plant mainly has a few kinds of pests. Early prevention and control is the main approach, and after that regular inspections are needed. If there are some insects, use pesticides to kill them. For example, for aphids you can use dimethoate emulsion, while for leaf-rolling moths fenitrothion is feasible, for inchworms you can still use the pesticide used for aphids, and for nettle caterpillars you should directly bury the cocoons, then remove them manually, and you can also use their phototaxis to kill them.

1. Uranus

This disease often affects this plant, and we can use some pesticides to kill it.

2. Longhorn beetles

We need to frequently check the branches and trunk, because longhorn beetles may be present. If found, seal the hole and then kill them.

3. Aphids

This is the key point. It is best to apply dimethoate emulsion and the like at the initial hatching stage. This is the 80 percent type, and it needs to be a double-strength preparation. In addition, we can apply omethoate at a concentration of 40 percent and a dilution of 2000 times. If galls have already formed or have appeared on the tree, the concentration should be increased.

4. Leaf-rolling moths

If the larvae have just hatched, or because the leaves are rolled they have not fallen to the ground, we can apply fenitrothion at a concentration of 50 percent and a dilution of 1000 times. In addition, trichlorfon at a concentration of 90 percent and a dilution of 1000 times can be used for spraying to kill them.

5. Inchworms

These need to be killed at the larval stage, and trichlorfon can be used. Dimethoate can also work on them, requiring a concentration of 40 percent and a dilution of 1000 times. Catching the larvae, or releasing parasitic wasps, is also very useful for eliminating them.

6. Nettle caterpillars

For these, collect their cocoons and then bury them in the soil. The methods for collecting cocoons are picking, knocking, digging, and so on. In this way the pest density will be greatly reduced. Moreover, their larvae are usually gregarious, so we can pick them off. In addition, we can use their dependence on light to lure them over and then eliminate them.