NPS photo
A wooden cart is filled with the fall harvest from the kitchen gardens
The Importance of Today’s Historic Garden
The historic seeds used in today’s garden are called Heirlooms. Heirlooms are open-pollinated seeds that were grown before the 1940s. Plants grown from open-pollinated seeds will reliably reproduce seeds with the genetic blueprint for that same plant year after year. As a result, open-pollinated seeds are ideal for saving and using in next year’s garden.
The newer hybrid seeds were first developed and sold in the 1930s. Hybrids combine desirable qualities of their parent plants such as high yield under many conditions and disease resistance. However, hybrid seeds must be produced under controlled conditions and cannot be reliably saved. Seeds saved from hybrid plants tend to revert back to one of the parent plants, or be sterile. Hybrid seeds must be obtained each year from various seed companies. Because of their desirable qualities, farmers started using hybrid seeds and stopped saving Heirloom seeds. As a result, many older vegetable varieties were lost forever.
The loss of older open-pollinated vegetable varieties has resulted in less genetic diversity in the world’s food crops. Genetic diversity is needed to help maintain a stable world food supply and to provide breeding stock to produce hybrids. The danger of disease wiping out a whole vegetable crop is high if there are only a few open-pollinated varieties of that vegetable remaining.
By researching, locating, growing, and saving Heirloom seeds, the historic garden at Grand Portage National Monument is helping to preserve the genetic diversity in the food plant world.