Crassula helmsii
Crassula helmsii
(swamp stonecrop)
Plants
Exotic

Impact ID5655
Impact TypeRecreation
Study TypeAnecdotal
Study LocationN/A
Impact DescriptionCrassula helmsii is one of ten weed species in England that have a negative impact on angling and is estimated to cost angling 170,636 pounds across the 10km affected stretch of river. Removal of Crassula helmsii ranges from 1,450-7,225 pounds per pond.
Reference39944
Great Lakes RegionNo
Cost 
LocationEngland

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Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/13/2026].

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