The cochineal appears as thin strips or whitish shields, which infest old branches and little exposed trunks of creepers. They can also lead weakening of the plant. A waxy coating protects their bodies: it’s difficult to treat them with products that act by contact.
The best time to act in advance is during the winter months, distributing white oil, so in the absence of leaves there is no damage to the plant (it is phytotoxic) and the parts without vegetation are better sprayed. Currently there are also summer oils, which do not damage the vegetation, often associated with Imidacloprid, which has a systemic action.
LOOK AT OUR MOST DISEASE-RESISTANT ROSES: