一般影響
E. crassipes是世界最嚴重的雜草之一。人們把它傳播到世界上大多數的熱帶和亞熱帶地區，形成厚厚的墊子覆蓋稻田，堵塞灌溉渠道，阻礙導航，阻礙捕撈活動，洪災時掃除建築物，也提供轉遞疾病的蚊子產卵所。每6至18天生物量增加一倍，視地區與月份而定，此雜草迅速侵入水道，造成世界各地人類的問題。族群沿著非洲維多利亞湖是的消極影響的雜草堵塞水的方式，導致關閉水力發電廠Jinga和增加案件經由蚊蟲傳播的疾病。(Williams Undated). 在巴布亞新幾內亞，布袋蓮擾亂獨木舟、小艇與大船的水上運輸系統，阻隔人們到學校、保健中心、政府部門、農地、漁場與當地市場的通路。入侵植物理論曾預言，因水文改變而解除環境的限制，往往可以導致一個成功的入侵(Galatowitsch et al.1999, 在 Toft 2000)換句話說：人類破壞或改變環境，鋪平了侵入物種建立族群的道路。人類的灌溉水渠，水電設施和人工湖泊，破壞濕地生態系統，使得該地區特別容易受到布袋蓮入侵。(Barret 1989, in Toft 2000). 在加州的薩克拉門托河/ 聖約昆河三角州的水壩受布袋蓮充溢的影響，哪裡的布袋蓮在1947出現 ，但是直到 1980 年代才開始阻礙船舶交通(Toft 2000). 布袋蓮在溫暖的地方帶來環境的問題，它會全年度生長而且發展成密集大型、自由漂浮、單一植物的島嶼狀或墊狀植群，與其他水生物種競爭陽光，養分和氧氣。(Gopal 1987, in Batcher Undated; FDEP Undated; Toft 2000)這些墊會蔭遮住本土水生植物，根除本土水下物種(FDEP Undated)。他們減少溶氧量與光線，嚴重改變生態系統，也改變植物和動物社群。低溶氧量危害本地魚類(FDEP Undated)魚類產卵區也可能會減少，重要的水鳥棲息地也會退化。(Schmitz et al.1993, in Batcher Undated)這些墊也存放大量有機質，增加沉積物的有機物質，並且嚴重加速更替模式，讓水下、河岸的植物拓展開來。(Penfound 與 Earle 1948, Trivedy et al.1978, Gopal 1987 ，Woods 1997, in Toft 2000) E. crassipes對人類用水，產生不利的影響。它會減少排水溝渠的流動，造成洪水氾濫與對渠岸與結構的傷害。它妨礙灌溉水渠的流動，妨礙抽水機泵水灌溉。公用冷卻水庫的水流模式也會被破壞。布袋蓮干擾娛樂和商業的航行，負面地影響漁民、釣客與娛樂運動水域中的滑水者和游泳者。水的使用被限制會降低房地產與觀光事業的價值(Batcher Undated)。嘗試控制此雜草的結果可能會導致經濟的損失。光中國一個國家，手動清除雜草就要每年花費約100萬人民幣(約合1200萬美元)，既不經濟，也沒有效果。(Jianqing et al.2001)
地點特有的影響：Guam 
生態系統變化: Eichhornia crassipes can quickly cover bodies of water, creating shade and restricting oxygen exchange at the surface. Florida (USA) (United States (USA))
物理干擾: Boat traffic on several rivers was halted; hundreds of lakes and ponds were covered from shore to shore with up to 200 tons of water hyacinths per acre.
生態系統變化: Pennywort is a common native that functionally occupies similar habitats as hyacinth. Differences between pennywort and hyacinth habitats highlight the role of water hyacinth as an invasive "ecosystem engineer". Research specific to hyacinth and pennywort (Hydrocotyle umbellata) in Florida has shown that overall dry biomass of hyacinth is 259% greater than pennywort (Reddy 1984, in Toft 2000). Other research in Florida on hyacinth and a different species of pennywort (Hydrocotyle ranunculodies) has shown that overall dry biomass of hyacinth is 161% greater, and the maximum root length of hyacinth is 164% greater (Jantrarotai 1990, in Toft 2000). The roots of hyacinth can be important habitat for epiphytic macroinvertebrates (aquatic invertebrates living on macrophytes) which illustrates just one of the changes brought about by the invasion of native habitats by water hyacinth (Hutchinson 1967, Schramm et al. 1987, in Toft 2000), especially amphipods (Schramm et al. 1987, Bailey et al. 1993, Bryan 1993, in Toft 2000). Texas (United States (USA))
改變自然底棲生物群落: Eichhornia crassipes has the lowest dissolved oxygen levels as compared to milfoil, hydrilla, pondweed, and a native mix of submersed plants in Texas, and was the only plant to have averages below 5 mg/L (Madsen 1997, in Toft 2000). 5 mg/L represents the level at which fishes start to experience oxygen stress (Madsen 1997, in Toft 2000).
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