This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 蕿 is uncertain. It visually contains 艹 (grass) and 煖 (warm), but the original semantic and phonetic roles are unclear.
The top is grass 艹, and the bottom 煖 suggests warmth. Picture warm grass, but its exact meaning is unclear.
For ケン, imagine a warm grassy field where you meet someone named Ken: Ken -> ケン, and he is sitting in the warm grass.