gardener planting bulbils of chinese yam, lat. dioscorea opposita in reusable plastic tray on wooden table

background bigger bulbil bulbillus bulbils chinese cultivate cultivated dioscorea early farmer flat gardener gardening green greenhouse growing growth hand harvest health healthy herb lat lay medicinal medicine natural nature opposita organic plant planting plastic pre-cultivated precultivate preplanting reusable roots seed spring table tray wooden yam