How to Fertilize tulip 'Orca'?
Light bulb fertilizer at emergence and again after flowering

tulip 'Orca' · Tulipa 'Orca'
Plant bulbs in late autumn, at a depth of 10-15cm (4-6in) in fertile, well-drained soil. Choose a sunny position, with protection from strong winds and excess winter wet. Lift bulbs annually, once the leaves have died down, and ripen in a cool greenhouse, keeping dry over the summer. See tulip cultivation for more details
Light bulb fertilizer at emergence and again after flowering