Gymnosperms are a rich source of food. Seeds of these non-flowering plants are edible and used for producing various food products. Eg: Pinus and cycas.
Some species of gymnosperms are a good source of starch so could be used in the production of sago. It serves as a major staple food for indigenous people. Eg, sago palm.
In native parts of America and in lowland regions, the leaves of certain gymnosperm species are soaked and eaten as green leafy vegetables.