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Upcoming Events

For Lands' Sake Tours June 4, 3:30 PM - Nelson/Johnson tour: The Nelson walk will highlight some native prairie plants as well as Oak Savanna natives. Our timber floor has successfully burned for 3 years in a row. We have also had some thinning done with some clearing of down trees. This tour will provide a side-by-side comparison of a managed timber to the North of the driveway with an overgrown mess to the South. As I am still learning to ID native plants myself, some you are sure to see are Purple Milk Weed, Lead Plant, Jack in the Pulpit, Green Dragon Plant, a variety of sedges, and many more. Most of the terrain is hilly, so please come prepared with proper walking shoes and a walking stick if preferred. There will be prairie remnant on both sides of the fence. The Johnson property has been managed for 20+ years. DIRECTIONS: 2533 290th Street Peru, just SW of the town of Peru (located SE of Winterset). Take Peru Road to the stop sign in the town of Peru. Turn South on Odell Ave. Odell Ave. will quickly turn into Brown Street. Proceed West on Brown Street out of town (the road will turn into Gravel). The gravel road will come to a Y intersection. Stay to the right of the Y intersection to continue West on 290th Street. You will immediately notice a house to the North. Our driveway is just past the house on the North, just before you reach the bridge. There is a sign with our Name and address at the entrance of the driveway. June 25, 3:30 PM - The Shirm property and two adjoining pieces, managed for 20+ years primarily for hunting. A very high quality landscape with diverse remnants, savannas, and a prairie reconstruction. Details will be provided nearer the date.

Next SIOSA board meeting

Thursday, August 3, 7:00 PM at Decatur County Courthouse in Leon.


Welcome to the website of The Southern Iowa Oak Savanna Alliance (SIOSA). We are a non profit organization involved in the preservation and conservation of Iowa’s oak savanna and prairie ecosystem.


New: Download the Decatur County Conservation Board Prescribed Fire Burn Plan Form to Help Plan Your Burn – Click Here