Photos: Harvesting native Minn. prairie species

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Princeton, Minnesota, USA — Trista Backlund and other Prairie Restorations, Inc. employees harvest Hoary Vervain in Princeton, Minn. Sept. 12, 2012. Prairie Restorations, Inc. specializes in the designing, restoring and managing of native plant communities. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Trista Backlund holds a sample of Hoary Vervain during harvest in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Greenhouse manager Raina Kujawa uses a seed cleaner to separate Prairie Cinquefoil seeds from the chaff at Prairie Restorations, Inc. in Princeton, Minn. Sept. 12, 2012. Prairie Restorations, Inc. sells more than 100 wildflower, sedge, grass and tree species. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Prairie Restorations, Inc. founder and president Ron Bowen, right, chats on the phone with his brother and vice president John Bowen nearby. The brothers started the business in Princeton, Minn. in 1977 and the company has grown to a staff of 40 full-time employees in six locations. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Al Nord harvests a field of Little Bluestem at Prairie Restorations, Inc. in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — The combine rolls through a field of Little Bluestem at Prairie Restoration in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Al Nord feeds Little Bluestem seed through an auger during harvest at Prairie Restorations, Inc. in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Stiff Sunflower seedheads dry on a table at Prairie Restorations, Inc. in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Raina Kujawa examines a tray of plants in the woodland greenhouse at Prairie Restorations, Inc. in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Prairie Restorations, Inc. greenhouse manager Raina Kujawa collects plants from a greenhouse in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo

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Princeton, Minnesota, USA — Aaron Lueck, left, and Trista Backlund pile Hoary Vervain for drying at Prairie Restorations, Inc. in Princeton, Minn. Sept. 12, 2012. (MPR Photo/Jeffrey Thompson) link to this photo