Editing Prunus subcordata (section)

== Cultivation ==

=== Soil and water ===

In the wild, larger growth is associated with deeper sandy loams and ample water, while the species also occupies rocky hillsides and canyons.<sup>[[#cite_note-3|[3]]]</sup> For cultivation, Oregon State recommends moist, well-drained soil and full sun; the PFAF cultivation account likewise recommends a moisture-retentive but well-drained loam and cautions that excessive lime may cause chlorosis.<sup>[[#cite_note-2|[2]]]</sup><sup>[[#cite_note-4|[4]]]</sup> The practical target is steady moisture with drainage rather than either prolonged saturation or a sharply drying root zone.

=== Sun and humidity ===

The species occurs in open pine forest, canyons and exposed hillsides, and Oregon State recommends full sun.<sup>[[#cite_note-2|[2]]]</sup><sup>[[#cite_note-3|[3]]]</sup> Give a planted tree an open, well-aired position with enough light for flowering and fruiting. Its natural range includes both moist streamside settings and dry, exposed sites, so local irrigation should follow soil drainage and seasonal rainfall rather than a fixed watering schedule.

=== Seasonal changes ===

Pacific plum is deciduous. PFAF records flowering in April and seed ripening in August–September; the Oregon field bulletin describes fruiting in late summer or early autumn.<sup>[[#cite_note-4|[4]]]</sup><sup>[[#cite_note-3|[3]]]</sup> Keep the root zone supplied with moisture during active growth and fruit development while maintaining drainage, then account for the leafless dormant period when planning irrigation. Fruit set and bearing are affected by weather, insects, soil, crop load and plant condition, so a calendar date is only a starting point rather than a guaranteed harvest schedule.<sup>[[#cite_note-3|[3]]]</sup>