按照这个十五种最低农药的蔬菜水果，兰花菜被列在第15，还算不错……

The Clean Fifteen: 15 Foods That Are Low in Pesticides
 

https://www.healthline.com/nutrition/clean-15#TOC_TITLE_HDR_2
 

Summary About
70% of broccoli samples were free of pesticide residues, in part because the
vegetable contains its own natural insect repellents.