Assertion: river birch | /r/CapableOf | favor ph
Facets:
value: below 6.5
type: OTHER
Source sentences:
text: Slightly acidic soils (with a pH between 5.0 and 6.5) are ideal, but preferences vary with the species, with river birch favoring a pH below 6.5 while yellow birch is tolerant of alkaline conditions.