How to Fertilize Orange tree?
Every 2–4 weeks during growing season (spring to summer)

Orange tree · Citrus sinensis
Also known as: Orange, Sweet Orange, Navel Orange
Plant in full sun in a sheltered, frost-free location with well-drained, loamy or sandy soil. Water regularly during the growing season, allowing the top few centimetres of soil to dry between waterings. Apply a balanced citrus fertiliser every 2–4 weeks from spring to late summer. In colder climates, grow in containers and overwinter indoors or in a greenhouse, as the tree is not fully hardy.
Every 2–4 weeks during growing season (spring to summer)