|                    Illinois pondweed
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                |                    Potamogeton illinoensis  
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                |                    Potamogetonaceae 
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                 Landscape Uses:
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                 Primarily recommended for natural landscapes and habitat restorations. | 
               
                Ecological Restoration Notes:  | 
               
              
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                | Availability: | 
               
              
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                 Grown by enthusiasts. | 
               
              
                | Description: | 
               
              
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                 Floating or submerged aquatic herb. | 
               
              
                | Height: | 
               
              
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                 N/A; a floating or submerged aquatic. | 
               
              
                | Growth Rate: | 
               
              
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                 Moderate. | 
               
              
                | Range: | 
               
              
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                 Widespread in North America south to Miami-Dade County and the Monroe County mainland; West Indies, Mexico, Central America and South America. | 
               
              
                | Habitats: | 
               
              
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                 Marshes. | 
               
              
                | Soils: | 
               
              
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                 Wet, poorly-drained organic or calcareous soils. | 
               
              
                | Nutritional Requirements: | 
               
              
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                 Low; it grows in nutrient poor soils. | 
               
              
                | Salt Water Tolerance: | 
               
              
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                 Low; does not tolerate flooding by salt or brackish water. | 
               
              
                | Salt Wind Tolerance: | 
               
              
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                 Low; salt wind may burn the leaves. | 
               
              
                | Drought Tolerance: | 
               
              
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                 Low; requires moist to wet soils and is intolerant of long periods of drought. | 
               
              
                | Light Requirements: | 
               
              
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                 Full sun. | 
               
              
                | Flower Color: | 
               
              
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                 Greenish. | 
               
              
                | Flower Characteristics: | 
               
              
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                 Inconspicuous. | 
               
              
                | Flowering Season: | 
               
              
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                 Spring-fall. | 
               
              
                | Fruit: | 
               
              
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                 Inconspicuous cluster of drupelets. | 
               
              
                | Wildlife and Ecology: | 
               
              
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                | Horticultural Notes: | 
               
              
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                | Comments: | 
               
              
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