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UMN Soil Test Results: <br />Organic Matter: 5.9%, which measures “high” (on high scale of 4.6 to 19) <br />PH: 7.2, which measures .2 above optimum (slightly acidic) <br />Phosphorus: 46, which measures “very high” (on scale of 5-25) <br />Potassium: 99, which measures “medium” (on scale of 25-225) <br /> <br />All test results are within normal ranges and no soil amendment is needed. <br /> <br /> <br />4. Depth of Raingarden <br />Based on our good infiltration results we are planning a depth of 8 inches for our raingarden. Per ‘Blue <br />Thumb Guide to Raingardens’, a raingarden should never be deeper than 12 inches. 2 inches are going to <br />be reserved for doubled shredded hardwood mulch and 2 inches for compost. <br />Calculation for amount of compost and mulch: 𝐴𝐴× 0.00617 =𝑚𝑚𝑚𝑚𝑠𝑠𝑚𝑚𝑚𝑚𝑖𝑖𝑚𝑚𝑖𝑖 𝑖𝑖𝑖𝑖 𝑐𝑐𝑐𝑐𝑐𝑐𝑖𝑖𝑐𝑐 𝑦𝑦𝑚𝑚𝑚𝑚𝑦𝑦𝑠𝑠 <br /> <br />“A = area in square feet of garden. Calculation can be used for either compost or mulch and is for <br />depths of 2 inches.” <br /> Mulch: ~ 0.833 cubic yards <br /> Compost: ~ 0.833 cubic yards <br /> <br /> <br />5. Plant Selection for Trillium Raingarden <br />We selected pollinator native shrubs that will provide food for pollinators from April to October. We added <br />two perennials, Golden Alexanders and Anise Hyssop, to provide nectar for the months of April and <br />October. Our goal also was to make this raingarden as maintenance free as possible. Low maintenance is <br />the criteria for the St Anthony Village Gardeners to provide maintenance of this garden. <br /> <br />