How to Fertilize geranium 'Gemstone'?
High-potash pelargonium feed every two weeks through blooming warm season

geranium 'Gemstone' · Pelargonium 'Gemstone'
Under glass grow in a loam-less or loam-based potting compost in full light with shade from hot sun with good ventilation. When in growth water moderately and apply a balanced liquid fertiliser in spring and early summer. A high potash fertiliser should be used when in flower. Water sparingly in winter. Can be grown outside in frost-free areas in a fertile soil. See Pelargonium cultivation for further advice.
High-potash pelargonium feed every two weeks through blooming warm season