How to Fertilize hibiscus 'Tosca'?
Balanced perennial feed every four weeks spring through summer growth

hibiscus 'Tosca' · Hibiscus 'Tosca'
Grow in neutral, well-drained soil, in full sun, in a warm position such as a south-facing or west-facing wall to encourage flowering, and protect roots in winter with an organic mulch
Balanced perennial feed every four weeks spring through summer growth