Water hyacinth persists late in New Orleans waterways

October 7, 2026

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was observed on 2026-10-05 in New Orleans, Louisiana.¹ This introduced aquatic plant from the Amazon basin continues to persist in local waterways into early October, when tropical species typically decline.¹ Warmer-than-normal temperatures may be extending the invasive species' growing season.¹

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More about Common water hyacinth

Common water hyacinth spreads in local waterways

September 21, 2026

, an introduced aquatic plant from the Amazon basin, was recorded on 2026-09-19 in Village De L'Est and on 2026-09-17 in Orleans County. This highly invasive species continues to be documented in local waterways and wetlands.