Understand Flowers
In order for a plant to produce a harvest, it must be pollinated. To be pollinated, a pollen grain must move from the anthers to the stigma.
But what does this mean? Flowers have Stamens and/or Pistils. The Stamens (also known as male parts) create the pollen and consist of filaments and anthers. Pistils (also known as female parts) contain egg cells in the ovary, stigma, and style.
If a flower has both stamens and pistils, it can self-pollinate, have wind and water pollination, or be pollinated by a pollinator.
Some plants, however, only have stamens or only have pistils. This means the plant is male or female. In these cases, the plant is unable to self-pollinate. Male and female plants must be pollinated by a pollinator, wind, or water.