PUBESCENT

adj. sexually mature; (about a leaf) covered with soft downy hairs

Pubescent has several meanings:A pubescent person is a young individual who is undergoing the physical and mental changes associated with puberty."pubescent" is also a botanical term, referring to a part of a plant that is noticeably covered with trichomes.
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Pubescent /pu·bes·cent/ 1. arriving at the age of puberty. 2. covered with down or lanugo. pu·bes·cent adj. 1. Reaching or having reached puberty. 2. [more]Pubescent - Community and Resources

Adjective
1. (of animals especially human beings) having arrived at the onset of puberty (the age at which sex glands become functional) but not yet fully mature; "the budding breasts of a pubescent girl and the downy chin of pubescent boy"
(similar) immature
2. covered with fine soft hairs or down; "downy milkweed seeds"
(synonym) downy, puberulent, sericeous
(similar) hairy, hirsute
(classification) biology, biological science

adj. pubescent, sexually mature