长（zhǎng）: a verb, grow, from small to big(植物生长plants grow), from young to old(孩子长大children grow up) 种（zhòng）: a verb, to plant, plant flowers,trees and so on(种菜grow vegetables) 养（yǎng）: a verb, to raise, raise a baby（养小孩raise a child）, an old(赡养老人supporting the old）or an animal(养宠物get a pet） BTW: 长（cháng）: an adj, long, not short

长 grow become big from small 种 grow as care about plants 养 grow as care about animals

长 grow 种 plant 养 raise