Most people find weeds growing in the pot, they will immediately pull them out. In fact, leaving some weeds appropriately is good for flowers. Such as they can help us observe the dry condition of soil, if the weeds malaise which indicates that the plant is short of water, they need to water immediately. Through the growth state of weeds, we can also judge whether the soil is loose and fertile. If the weeds grow more and very strong, it indicates that the fertility of soil is sufficient. If not, and nutrients need to be replenished in time. In addition, when pulling weeds, it is easy to uproot, which indicating that the soil is relatively loose. Otherwise, it needs to be loosened quickly.