How to Fertilize delphinium 'Light Blue'?
Balanced perennial feed every four weeks from spring through summer

delphinium 'Light Blue' · Delphinium 'Light Blue'
Will grow well in fertile, well-drained soil in full sun and apply a balanced liquid fertilizer every other week during the growing season. It will need shelter from strong winds; staking may be necessary. See staking: perennials and delphinium cultivation for further advice
Balanced perennial feed every four weeks from spring through summer