How to Fertilize daffodil 'Professor Einstein'?
Light bulb fertilizer at emergence and again after flowering

daffodil 'Professor Einstein' · Narcissus 'Professor Einstein'
Plant bulbs at one and a half to two times their own depth in autumn. Will tolerate most soils but prefers moderately fertile, well-drained soil that is constantly moist during the growing season. See daffodil cultivation for further advice
Light bulb fertilizer at emergence and again after flowering