Here is a list of pests that damage ornamental plants. 1. Groundnut Aphid, Aphis Craccivora Koch (Hemiptera: Aphididae): This black coloured aphid species attacks Bougainvillea spp. from December to February. Both adults and nymphs infest flowers, tender leaves and the terminal portions of the plant and suck cell sap. Its attack results in the premature […]