Citrus × AurantiumCitrus × aurantium

Allow the top 5-7 cm of soil to dry out between waterings. Water thoroughly until water drains from the pot's drainage holes.

Reduce watering frequency during winter months to prevent waterlogging and root rot, as growth slows significantly.

Prune in late winter or early spring before new growth emerges. Remove dead, damaged, or crossing branches. Shape the tree to encourage good air circulation and fruit production.

Thin out dense foliage to allow light penetration.

Sour oranges are typically propagated by grafting onto rootstock. Seed propagation is possible but often results in offspring with variable characteristics, and seedlings may take many years to fruit.

Grafting ensures desired traits and faster fruiting.

Repot young trees every 1-2 years and mature trees every 3-5 years, or when root-bound. Use a well-draining potting mix, preferably one formulated for citrus. Repot in spring before the main growing season begins.