well-grown
/ˌwɛlˈɡrəʊn/adjective
1That shows considerable or satisfactory growth or development.
2 Shipbuilding. Of a knee or other piece of timber used in the construction of a ship: that has the grain of the wood following the shape required. Now historical and rare.
Origin
Late Middle English; earliest use found in Geoffrey Chaucer (c1340–1400), poet and administrator. From well + grown.