noun. A system or growth of roots.

noun. Origin or establishment.

noun. The act of striking root; the growth or fixture of roots; the hold obtained by means of a root or roots.

noun. Extirpation.

noun. fixedness by or as if by roots

noun. the place where something begins, where it springs into being

noun. a developed system of roots

"This was to give the peas deep rootage, which is a point necessary for the quick and stable growth of this vegetable."

fixedness  immobility  scheme  stationariness  system