Rose leafroller

Systematic position of the rose leafroller (Notocelia rosaecolana) falls under the order Lepidoptera and the family Tortricidae. This insect is a significant pest primarily affecting various species of roses, posing a threat to ornamental horticulture globally by targeting both wild and cultivated varieties.

The crops damaged by this moth are almost exclusively rose plants. During the spring, larvae attack tender shoots, foliage, and developing buds, which can lead to severe loss of vigor and destruction of the ornamental value of the roses if the infestation is not managed properly.

The biology and life cycle typically involve wintering in the larval stage. Young caterpillars hibernate in silk cocoons hidden within bark crevices or near bud scales. As temperatures rise in spring, they emerge to feed on opening buds and young leaves, completing their development before pupating within the characteristic rolled foliage.

The nature of damage and harmfulness is characterized by the larvae spinning silk to bind leaves together into "nests" or rolls, providing protection while they feed. When larvae bore into the flower buds, the buds often fail to develop normally or produce distorted blooms, which is particularly devastating for commercial floriculture and private gardens.

Protection measures should be initiated early in the season to prevent irreversible damage. Key strategies include:

• Pruning and destroying infested plant parts in early spring;
• Monitoring for silk rolls on leaves and manual removal;
• Applying selective insecticides at the early stage of larval emergence;
• Ensuring proper plant health through optimal watering and fertilization to help the roses recover from minor damage.