| Denseflower knotweed
|
| Polygonum glabrum
|
| Polygonaceae
|
Landscape Uses:
|
|
Primarily recommended for natural landscapes and habitat restorations. Also margins of ponds and lakes. |
Ecological Restoration Notes: |
|
|
| Availability: |
|
Grown by enthusiasts. |
| Description: |
| |
Small to medium creeping herb. |
| Height: |
| |
About 2-3 feet in height. Spreading and forming dense mats much broader than tall. |
| Growth Rate: |
| |
Moderate. |
| Range: |
| |
Eastern and southeastern United States west to Texas and south to Miami-Dade County and the Monroe County mainland; West Indies, Mexico, Central America, South America and the Old World tropics. |
| Habitats: |
| |
Swamps and marshes. |
| Soils: |
| |
Wet, poorly-drained sandy or organic soils, with humusy top layer. |
| Nutritional Requirements: |
| |
Moderate; can grow in nutrient poor soils, but needs some organic content to thrive. |
| Salt Water Tolerance: |
| |
Low; does not tolerate flooding by salt or brackish water. |
| Salt Wind Tolerance: |
| |
Low; salt wind may burn the leaves. |
| Drought Tolerance: |
| |
Low; requires moist to wet soils and is intolerant of long periods of drought. |
| Light Requirements: |
| |
Full sun to light shade. |
| Flower Color: |
| |
White. |
| Flower Characteristics: |
| |
Semi-showy. |
| Flowering Season: |
| |
Spring-fall. |
| Fruit: |
| |
Inconspicuous nut. |
| Wildlife and Ecology: |
| |
|
| Horticultural Notes: |
| |
|
| Comments: |
| |
|
|
|
|
|