Here's how it works: A library card gets you a packet of seeds. You then grow the fruits and vegetables, harvest the new seeds from the biggest and best, and return those seeds so the library can lend them out to others.
Syson says tending a garden in Western Colorado can be frustrating. The dry climate, alkaline soils and short growing season keep many novices from starting. She'll take seeds from the plants that withstand pests and persevere through drought.
"If you save seed from those plants, already, in one generation, you will now be able to grow a plant that has those traits," Syson says.