The heads were used to grow beans. When to plant the seeds, nuts mixed in a sticky substance that is toxic to rhizobia and easy to find, such as vegetable oil, molasses or sugar solution. Then mix the powder inoculated Rhizobium species specific type of bean that. The powder sticks to concentrate all the seeds. So the bean to planting. This will ease the seeds already planted. When the roots sprout from seeds. Rhizobium surrounding the seeds will be able to root faster too.