Dittrichia graveolens (stinkweed)
The invasive stinkweed, Dittrichia graveolens, was not even mentioned in the 1993 Jepson Manual because it had not been recognized as a non-native. Any reports existing then were of the opinion that it was some sort of tarplant.
Now it is a serious menace, starting to spread along highways and into rancher’s fields.
The California Invasive Plant Council (Cal-IPC) indicates that it “can form dense stands in late summer/early fall with few plant competitors. It grows rapidly late in the year from small rosette to over 1meter tall in open, disturbed, riparian, non-native grasslands, and sites which may include some native species.”
More information can be found at the following links.
California Invasive Plant Council (Cal-IPC)
Invasive Species Early Detection Program (ISED)
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| Dittrichia graveolens (stinkweed) | Dittrichia graveolens (stinkweed) |
Dittrichia graveolens (stinkweed)
Photos by Vernon Smith