California

This taxon scored highly and would appear to be a strong candidate for invasiveness in California. Published documentation is fairly thorough and complete.

Seed viability in California remains somewhat uncertain.

There was not much information found assessing how invasive Senna artemisioides may be in areas across the world where it is not native.

The common horticultural container plant Euphorbia ‘Diamond Frost’ is sometimes attributed to Euphorbia hypericifolia but it is not closely related (CDFA). Ron Vanderhoff suspects that Euphorbia is marginally adapted to xeric conditions and will likely become a common urban weed but will only marginally establish in wildlands (2022).

CABI:
https://www.cabi.org/isc/datasheet/119929
Accessed 09/23/2022

Websites accessed:

Pennisetum ciliare (L.) Link in GBIF Secretariat (2021). GBIF Backbone Taxonomy.