How to Fertilize Veronica 'Raven'?
Diluted all-purpose liquid feed every four weeks in warm growing season

Veronica 'Raven' · Veronica 'Raven'
Suits a range of well-drained soils, but best grown in poor to moderately fertile, neutral to slightly alkaline soil, in a sunny spot with shelter from cold, drying winds. Needs winter protection in cold winters
Diluted all-purpose liquid feed every four weeks in warm growing season