fertility
沃 centers on land that is rich and productive: fertile soil that yields abundant growth.
沃 combines 氵 (water) with 夭, which likely contributes the sound and suggests lush, bending growth. Together they express the idea of watering land to make it fertile.
Water 氵 nourishes the young, bending shoots 夭, turning the soil fertile and productive.
For ヨウ, imagine a fertile field being watered by a yoke of oxen: yoke -> ヨウ, and the water makes the land rich.
fertile; rich; productive
soil fertility
to pour; to dash (water) over; to douse with
rich soil; fertile land
fertile land; oasis
fertile field; field with fertile soil
fertile fields or plain
vast expanse of fertile land
Fertile Crescent
fertile soil; fertile land; fertility
henbane (Hyoscyamus niger)
fertility