There are native calamagrostis species in the U.S but, you’re definitely correct, Calamagrostis X acutiflora or ‘Karl forester’ feather reed grass is not native to North America. Everyone makes mistakes, but given how overused it is in landscapes, a little hard to believe someone making a presentation on native grasses and sedges including both c3 and c4 grasses as well as explaining poaceae inflorescences, wouldn’t know that 🤔

@@oscarflip8561 thanks 👍 And...I admit... That I'll keep using it till there is something else that really fills its shoes! It's everywhere, but every time it does it's job. Karl smiles on every garden.

@@ericjorgensen8028 while it’s not necessarily a negative plant since it’s sterile and doesn’t become invasive or even exotic and naturalized, many skipper butterflies use only native grasses as host plants, and birds use those caterpillars from the skipper butterflies as a vital food source, and also eat the seeds of many of the native grasses as a winter food source. So while not necessarily bad, Karl forester grass doesn’t provide many of the important ecological services our native grasses do. I have some at my house that I planted before I knew about the significance of native plants, and it does look nice- but there’s better options. I recommend experimenting with some yourself. There are so many ornamental natives that weren’t mentioned in this video. My favorites are probably little bluestem, blue grama, and split-beard bluestem, but once again, there’s so many for every look! (I think Indian grass, is probably the best look-alike native replacement.) hope you decide to try some native grasses, they may surprise you with their beauty!