Question

Disease and pests that affect leucena , grevillea ,calliandra

Answer 1

There are several diseases and pests that can affect leucaena, grevillea, and calliandra plants. Some common ones include:

1. Anthracnose: This fungal disease can affect all three plants, causing dark, sunken lesions on leaves, stems, and flowers. It can be controlled with fungicide applications.

2. Root rot: Excessive moisture in the soil can lead to root rot in leucaena, grevillea, and calliandra plants. This can cause wilting, yellowing of leaves, and eventual death of the plant. Proper drainage and avoiding overwatering can help prevent root rot.

3. Spider mites: These tiny pests can infest all three plants, sucking sap from the leaves and causing yellowing and wilting. Regular monitoring and use of insecticidal soap can help control spider mite infestations.

4. Scale insects: Scale insects can also affect leucaena, grevillea, and calliandra plants by feeding on the sap of the leaves and stems. They can be controlled by introducing natural predators like ladybugs or using insecticidal sprays.

5. Caterpillars: Certain caterpillar species can feed on the leaves of leucaena, grevillea, and calliandra plants, causing defoliation and damage to the plant. Handpicking caterpillars or using biological controls can help manage caterpillar infestations.