Late ripening or late maturation — something (fruits, crops, or a person's abilities) that develops or ripens later than usual.
この品種は晩熟で、秋の終わりに収穫される。
This variety is late-ripening and is harvested at the end of autumn.
彼は学生時代は目立たなかったが、晩熟で現在は有名な研究者だ。
He wasn't remarkable as a student but, being a late developer, is now a well-known researcher.
晩熟の品種は春の霜害にあまり弱くない場合がある。
Some late-ripening varieties are sometimes less vulnerable to spring frost damage.