Female ginkgo trees absorb pollen making pollen allergies less bad.

There is male and female ginkgo trees. Male trees make pollen while female trees make female cones that absorb pollen. These female cones then turn into seeds. These seeds are stinky but very important for genetic diversity. So it’s best to grow ginkgo from seeds because cultivars and clones are all male and lack genetic diversity. An example of a plant lacking genetic diversity is the gros michel banana cultivar when a disease could infect one it could infect all of them equally because they were all clones of the same plant. With seeds you have genetic diversity due to genetic recombination and genetic mixing and an increased chance for mutations. With seeds one plant may be susceptible to a disease while one may have the genes to be resistant. You can get ginkgo seeds online on websites such as Etsy or live trees grown from seeds on etsy as well. Ginkgo trees grown from seeds have a 50% chance of being male or female. Female trees don’t make seeds until at least 20 years.