| Impact ID | 5643 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | In neglected nursery tanks it was observed that Crassula helmsii took over and chocked out other plants in the tanks. |
| Reference | 29473 |
| Great Lakes Region | No |
| Cost | |
| Location | Greensted, Essex, Great Britian |
