Why are the leaves on my bougainvillea curling. What do I feed it to boom? It hardly bloomed last year.
I can send a pic?
Several insect pests attack bougainvillea leaves, which results in leaf curling and wilting. The bougainvillea looper is a nocturnal caterpillar with a green or brown body. It consumes the edges of leaves, causing them to gradually curl inwards as the damaged tissue rots away. Aphids are also associated with leaf curling in bougainvillea.
Low temperatures also can cause leaf changes.
Leaf curling is a common symptom of many plant diseases, including infections of both fungal and bacterial pathogens.
Initial symptoms include discolored patches on the foliage's surface, followed by withering and disfigurement.
he soil's composition and texture can also lead to curling and discolored leaves in bougainvillea. Heavy soil types, like those with high clay content, often hold too much water near the roots of plants.
I'm not able to tell much from your image, you will need to do closer inspection of the plant itself. These links will help you.