Young Brunette Girl Travelling Around The World With Sunflowers

However, for commercial farmers growing commodity crops, the sunflower, like any other unwanted plant, is ten considered a weed. Especially in the midwestern US, wild (perennial) species are ten found in corn and soybean fields and can have a negative impact on yields.
Sunflowers can be used to extract toxic ingredients from soil, such as lead, arsenic and uranium. They were used to remove cesium-137 and strontium-90 from a nearby pond after the Chernobyl disaster.