Editing Citrus aurantium (section)

== Cultivation ==

=== Soil and water ===

Use a medium that drains freely but does not dry immediately between waterings. Well-drained soil and moist conditions are suitable starting points for sour orange, while container Citrus guidance emphasizes drainage to reduce root-rot risk. Keep water moving through the root zone rather than allowing a pot to remain saturated; adjust watering to the site's drainage and drying rate. <sup id="cite_ref-4">[[#cite_note-4|[4]]]</sup> <sup id="cite_ref-5">[[#cite_note-5|[5]]]</sup>

For container culture, choose a pot and medium that can be maintained without prolonged waterlogging, and repot as the tree outgrows its container. <sup>[[#cite_note-4|[4]]]</sup>

=== Sun and humidity ===

As a Citrus, sour orange is best started in strong light; full outdoor sun of at least eight hours is a genus-level planning point. High humidity supports optimum Citrus growth, but airflow still matters in a container or sheltered planting. Protect young plants from abrupt exposure to drying wind while they establish, then assess the plant's response under the local climate rather than transferring a rigid species limit. <sup>[[#cite_note-4|[4]]]</sup>

=== Seasonal changes ===

The subtropical distribution implies a warm-season growth pattern rather than a permanently tropical one. Maintain active root-zone moisture during hot, bright growth while preserving drainage, and reduce exposure to severe cold as the cool season approaches. Clemson's Citrus container guidance recommends protection below about 25°F; this is a genus-level cold-protection trigger, not a verified hardiness threshold for every sour-orange plant. <sup>[[#cite_note-2|[2]]]</sup> <sup>[[#cite_note-4|[4]]]</sup>