horticulture

她大学主修园艺学，专注于研究如何种植有机蔬菜。

She majored in ___horticulture in college, focusing on how to grow organic vegetables.

他退休后开始学习园艺，现在能熟练种植各种花卉。

After retirement, he took up ___horticulture and now grows various flowers skillfully.