Swamp smartweed

Swamp smartweed (Polygonum hydropiperoides) is a perennial flower native to the lower 48 states of the United States and found in the state of Maryland; it may or may not be native to Maryland.USDA Plants Database, 
== Identification ==
Its foliage is typically dark green.
It grows slowly from a single crown with roots at least 10 inches deep, and has a lifespan of 100 to 250 years.
== Cultivation ==
The USDA believes this plant to be readily available for purchase. It is propagated by the following methods: seed. Typically, this plant will seed itself at a moderate rate, and new seedlings will have a medium chance of success compared to other plants of this type.
Soil preferences: medium/fine soil, pH 4.5-8.8, medium fertilizer. Provide medium moisture. This plant has low salinity tolerance and low drought tolerance. It prefers full sun.
== Uses and Relationships ==
If you're seeking to provide forage to wildlife, this plant is of low value.
== More Information ==
The initial draft of this article was automatically generated from the Polygonum hydropiperoides profile in the USDA Plants Database. The Biota of North America Program (BONAP) may or may not have a page for this genus with detailed range maps. (BONAP range maps are copyrighted and should not be placed directly on our wiki.)
== References ==
Category:Polygonum Category:Native perennial flowers Category:North American natives Category:Commercially available natives Category:Natives with dark green foliage Category:Slow-growing natives Category:Medium moisture demand natives Category:Drought intolerant natives Category:USDA native stubs