這是我後院自種的空心菜。幾個禮拜前在中式超市買一束空心菜，把剩下的梗拿去擦在土裡就可以長了。
This is water spinach from my backyard. I brought a bundle of them few weeks ago. I used what was left over of that stand and planted it into the dirt. It grew. Need to water every day