Assertion: blackberry | /r/CapableOf | establish the plant mounds
Facets:
value: to provide the required drainage
type: PURPOSE
Source sentences:
text: Blackberries establish the plant mounds or ridges (3 feet wide) to provide the required drainage on poorly drained soils; Apply 4 to 6 inches of organic matter over the row in a band 18 to 24 inches wide and incorporate thoroughly using a rototiller or spade to a depth of 6 to 8 inches;