| 1 | A group of farmers are digging up the root crop cassava. | |
| 2 | This gravelly soil is well drained and good for growing root crops. | |
| 3 | Like potatoes, turnips are root vegetables that grow in the ground. | |
| 4 | This week, we move from root vegetables to a leafy vegetable. | |
| 5 | Conclusions: The leaf of Ophiopogon japonicus can be used as medicinal materials to extract the flavones. |