MDC’s seed collection boosts species diversity in grassland restoration. Some prairie species cannot be purchased from commercial seed dealers, he said. But also, seed for wildflowers, what biologists call forbs, can costs hundreds of dollars per pound. Seed collection reduces restoration expense. The collection effort this year netted about 6,500 pounds of seeds mixed with chaff, which will be used to plant about 300 acres of native wildflowers and grasses.