Editing Capparis spinosa (section)

=== Soil and water ===

Caper bushes are associated with dry sandy or gravelly soil, stone walls and rock crevices. A study discussing the species also describes reported growth in poor soils with low organic matter; those ecological statements are background context rather than measurements from the study's seed assay. <sup>[[#cite_note-2|[2]]]</sup><sup>[[#cite_note-3|[3]]]</sup>

For cultivation, translate that dry-site pattern into a root zone that drains rapidly and does not remain saturated. A lean mineral mix or gritty bed is a more defensible starting point than a rich, water-retentive soil. Water deeply enough to establish the plant, then allow the root zone to dry rather than maintaining constant wetness. No universal irrigation interval or salinity threshold is justified here, so avoid treating drought adaptation as permission to keep a young plant permanently dry.