Flower clusters form on the strawberry plant. Nectar contained within the strawberry plant draws insects to the plant. The insects collect pollen and then fly to other flowers to pollinate the strawberry plant. Strawberry plants are self-pollinating, though they can pollinate other strawberry plants too. The pistils on the flower are fertilized when tubes grow out of the pollen granules into the ovary. The size of the strawberry depends on how many pistils are fertilized. Once the ovules are pollinated, sperm from the pollen merge with egg cells within the ovule to form a zygote. Seeds mature and the ovaries ripen and grow, eventually growing into fleshy pericarp with seeds on the outside. The flowers fall off and the plant hormone ethylene ripens the strawberry and turns it from green to red. Seeds are often dispersed by animals consuming the strawberries and dropping the seeds on the ground. These seeds germinate when the conditions are right and split open their seed coatings. Contained within the seeds are food that nourish the strawberries, encouraging them to grow.
Though most people think of flowers and seeds when thinking about plant reproduction, some plants can reproduce asexually, including the strawberry. One type of asexual reproduction is through runners. These runners, also called stolons, are nodes that grow and extend along the ground or sometimes underneath the ground until they find ground that is suitable for a strawberry plant to grow. On these stolons are reduced leaves, which conduct photosynthesis necessary for keeping the stolon alive and allowing it to grow. When the stolon touches the ground, the stolon forms roots that travel deep into the soil in order to absorb moisture from the soil. These are specialized roots called adventious roots, which grow from the stem. From this point, a new strawberry plant begins to grow, forming foliage and leaves.
Farmers who want to start producing strawberries purchase runners from other strawberry producers. Instead of allowing the runners to find soil on the strawberry farm and forming roots into the ground, farmers cut the runners off the strawberry plant and ship them to the interested farmer. These cuttings will then form roots wherever the purchasing farmer places them.