The Germanic *gardaz — fence, enclosure — reached both English and Spanish through Frankish and Old French, meaning 'garden' and 'jardín' are one word in borrowed disguise. Chinese instead asks what grows there: 花园 names the flower first, the enclosed space second — content before container. Esperanto, ever the European synthesis, votes with the Romance majority. The fence and the flower are both faithful portraits; they simply face different directions.
The Anglo-Norman form 'gardin' contrasts with central Old French 'jardin'; both derive from the same Frankish source, which is why English kept the hard 'g' while Spanish borrowed the 'j'-initial form through a different French dialect pathway.
A plant (艹) that transforms (化): the character captures the moment a bud becomes a bloom, change made visible on a stem.
An enclosed space (囗) frames the whole character — the wall that defines the garden is also the word's structural skeleton. The interior element is phonetic, not pictorial, though in simplified script it happens to whisper 'origin' (元) by accident.
花园 (simplified) / 花園 (traditional). The standalone character 园/園 means an enclosed garden or park (as in 公园, public park). Other garden-words carry different nuances: 庭院 (tíngyuàn, courtyard), 园林 (yuánlín, classical landscaped garden), 菜园 (càiyuán, vegetable garden).
A root borrowing rather than a productive Esperanto construction; no generative affixes are at work in the base form. The root extends productively: ĝardenisto (gardener), ĝardenejo (a garden as a designated place), rozĝardeno (rose garden). The ĝ phoneme (/dʒ/) is uncommon in Esperanto roots and signals a foreign borrowing.
The oldest word for garden was the word for wall — an act of will drawn in wood and earth that said: here, things will grow differently.