human
I'd like to learn more about the different types of weeds.
assistant
There are many types of weeds, but they can be divided into two main categories: annuals and perennials. Annuals grow quickly and then die back each year, while perennials stay alive for multiple years and spread by seed or root systems. Weeds can also be classified based on their life cycle stages: seedling, rosette, flower, fruit, and seed. Some common weed species include crabgrass, dandelion, clover, and bindweed.