Lobelia may experience problems such as aphids, slugs, snails, root rot, and powdery mildew. Aphids feed on plant sap and can cause curled or distorted leaves, while slugs and snails may damage tender growth. Root rot commonly develops when the soil remains excessively wet or drainage is poor. Powdery mildew can appear as a white coating on leaves, especially when airflow is limited. To prevent these issues, water carefully, use well-draining soil, remove affected plant parts, and inspect plants regularly. Healthy growing conditions are the best way to keep lobelia vigorous and blooming.
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