How to Fertilize commonName:"begonia 'Cascade'"?
Balanced perennial feed every four weeks from spring through summer

commonName:"begonia 'Cascade'" · Begonia 'Cascade'
Grow in baskets and containers of peat-free multipurpose compost. Prefers part shade, or bright shade. Overwinter in frost-free conditions. See Begonias: outdoors for further advice
Balanced perennial feed every four weeks from spring through summer