徒长 Traditional form: 徒長 Pinyin (reading): túzhǎng Definitions: (of a plant) to experience excessive vegetative growth (at the expense of flowering or fruiting) Characters: 徒 - disciple, follower; only, merely; in vain 长 - long, lasting; to excel in Traditional characters: 徒 - disciple, follower; only, merely; in vain 長 - long, lasting; to excel in