How to Fertilize flowering dogwood 'Rainbow'?
Balanced evergreen shrub feed applied once per early spring yearly

flowering dogwood 'Rainbow' · Cornus florida 'Rainbow'
Grow in fertile, well-drained, neutral to acid soil in sun or partial shade. Keep roots cool with a mulch in summer. Shelter in exposed locations. For more advice, see flowering dogwood cultivation
Balanced evergreen shrub feed applied once per early spring yearly