A cotton swab was used to collect pollen from a freshly blossoming flowers on one plant and transfer that yellow pollen to the tips of the pistils of another plant. Do that until all the pistils get pollen. Then, do this in reverse for the flower that pollen was collect from with a fresh cotton swab. Each day, the plants were checked for newly blooming flowers, the pollen was collected, and transferred it to another plant. The goal is to pollinate all the pistils each day there is new flowers.