choy sum plants growing on a farm. choy sum or green cabbage in the garden

agriculture botanic cabbage cai xin caisim chinese flowering choi sam sum choy countryside cropping cultivate cultivated farmer farming farmland field fresh freshness garden gardening green greens grow growing growth harvest harvesting horticulture industrial land landscape leaf mustard natural nature organic petsai petsay plant plantation sawi bakso hijau soil tropical vegetable vegetables vegetarian plants farm one popular indonesia close-up view farm