「Plants for footsteps」or plants that may be walked upon, TURF as a thick mat of grass that tolerates being walked upon, as do sex slaves owned by a lord or wealthy merchant:「emerging green shafts with tension and gasping, springing taut」again after someone is no longer stepping upon them. Zoysia pungens is commonly known as temple grass or Manila grass, a thickly matted growth. Also symbolic of royalty, as manicured LAWNS were only for royalty and the very wealthy, since upkeep was expensive and a great luxury. Royals also tended to walk upon or trample others, figuratively speaking and literally. TURF and LAWNS in gardens were appreciated by people with no-longer-integrated and bound feet, such as harem concubines who were owned by royalty and the very wealthy, since the soft and level grass was easier to walk upon than stones or mud with ruts.
「Emerging shafts that possesses」are laughing PURPLE MUSHROOMS…psilocybin often causes long bouts of hysterical and uncontrollable laughter, with the greatest danger being that of blowing an aneurism, if present, with no fatal overdosing. Royals regularly enjoyed 'shrooms—and, why not? (non-addicting, non-narcotic, cannot overdose fatally) some advocate putting microdoses into city drinking water systems, and research also indicates these mushrooms promote increased thought power and a feeling of well-being, or happiness.
SESAME refers not to individual seeds per se, but instead to the shape of sesame seed pods that resemble female genitals to some degree, or perhaps a no-longer-integrated foot while in use by a client, filled with seeds from many ejaculations, a「plant like an owned sex slave possession」that spews and spurts seeds as it ruptures when ripe:
「Sesame fruit is a capsule, normally pubescent, rectangular in section and typically grooved with a short triangular beak. The length of the fruit capsule varies from 2 to 8 cm, its width varies between 0.5 to 2 cm, and the number of loculi from 4 to 12. The fruit naturally splits opens (dehisces) to release the seeds by splitting along the septa from top to bottom or by means of two apical pores, depending on the varietal cultivar.」
[ https://en.wikipedia.org/wiki/Sesame 2014-04-24 ]

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: Zoysia pungens
Japanese EDRDG: turf, lawn
Unihan extended: sesame; a purplish or brown mushroom thought to have miraculous powers; 'a divine and relicitous plant' (Karlgren)

Used within names (nanori)
こげ　･　しは