「Tree, plant, woody」「being plugged or plunged into soil」as FORCING SOMEBODY, a HEAD-FIRST INSERTION, an IMPLANTATION INTO SOIL of seeds that apparently refers to anal rape and intercourse, or to landscapers shaping berms and swales in the soil surrounding implantations.
　Perhaps describing when trees, shrubs, and plants have been dug up and the roots bound with jute burlap or some other wrapping during transport prior to replanting, plunging the ball of soil and roots into new ground and often causing some injury or wound to the plant, although it should soon recover. Depicts PLANTING, IMPLANTING, TRANSPLANTING a tree, crop, etc. Canine males, the「dogs」are endowed with a very special penis, unlike any other penis. The dog schlong is equipped with two glands located at the base of the shaft that engorge and harden upon erection, normally after penetration into the bitch's vaginal orifice. These locking bulbus glandis swell large enough to prevent the penis from being extracted from the bitch's vagina for quite some time. The swollen bulbus glandis at the base of the penile shaft covered by the bitch's hairy vaginal skin resemble the root ball wrapped in jute at the base of a tree during transplantation.
　Some sources claim the elements refer to giving seeds a head start by first using starter trays for germination and then transplanting the sprouts into soil after sufficiently developed, a procedure used for rice planting. Yet if so, the Chinese meanings of INSERTING HEAD FIRST and FORCING SOMEONE might require that the seedlings be implanted upside-down with the seedling top in the muck and the roots protruding like kicking legs. This technique is not often deliberately used since it was observed that the young plants tend to die.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: to grow; to plant; to insert; to force on sb; to fall head first
Japanese: implantation
Unihan extended: to cultivate, plant; to care for plants
EDRDG: plantation; planting