Assertion: birch's soil | /r/HasProperty | ideal
Facets:
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.
text: Humus-rich, well-draining soil is ideal.
text: Cool, moist soils are ideal.
text: Paperbacks do well in a variety of soil pH levels; slightly acid soil is ideal.