How to recognize and combat insects on decorative garden and/or indoor plants

Phytophagous insects that attack decorative garden and/or indoor plants include a wide variety of species, such as aphids, mealybugs, thrips, whiteflies, and mites, among others. Their development includes stages that vary by group, but generally go through egg, larval or nymph, and adult phases. Eggs are usually laid on the underside of leaves, on tender stems, or in cracks in the bark. Upon hatching, the larvae or nymphs begin to feed on plant tissues, sucking sap or chewing plant parts, depending on the species. This feeding causes a progressive weakening of the plant. Many of these pests can reproduce rapidly under favorable conditions, generating several generations in a single season. Some insects, such as aphids or mealybugs, exhibit parthenogenetic reproduction, which further accelerates infestation. Adults, mostly mobile, move to new plants to continue their development, and some can even act as vectors for viruses or other pathogens.