1
Water Hyacinth
- Dispersal Index (1-10)
- 9.8

This ranking evaluates the natural dispersal rate, area expansion speed, and ecological destruction potential of invasive species after introduction. Their extreme reproductive capacity and adaptability make them one of the most critical challenges for global biodiversity conservation.
These plants are known as 'Green Plagues.' Notably, many were originally introduced as ornamental flowers, like Water Hyacinth and Kudzu, spread globally for their aesthetic appeal. Key Facts:
| Rank | Plant Name | Dispersal Index (1-10) | Primary Dispersal Method |
|---|---|---|---|
| 1 | Water Hyacinth | 9.8 | - |
| 2 | Kudzu | 9.5 | - |
| 3 |
Smooth Cordgrass |
9.2 |
| - |
| 4 | Mile-a-Minute Weed | 9 | - |
| 5 | Canada Goldenrod | 8.8 | - |
| 6 | Water Lettuce | 8.5 | - |
| 7 | Black Locust | 8.2 | - |
| 8 | Garlic Mustard | 8 | - |
| 9 | Poison Hemlock | 7.8 | - |
| 10 | Impatiens (Invasive species) | 7.5 | - |
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