This is the seedhead of northern sea oats (chasmanthium latifolium), a type of grass that is native from the southeast to Pennsylvania. It’s a lovely grass and one of the few that gets above 2′ tall that will grow in partial shade. But the thing self-sows rampantly, making it a very aggressive spreader. Were it not a native, I’d surely call it invasive!
This is the seed head of one of the miscanthus species. It’s on just about every state’s invasive species list, including my own state, Connecticut.
I didn’t plant this grass. And when I first moved to the property, I hated it because I was always pulling out little self-sown plants. Then I started feeding the birds. And I’ve never found any more little miscanthus seedlings.
Obviously bird feeding cannot solve an invasive plant problem. But it certainly has solved the problem of my miscanthus self-sowing. Now if only they’d learn to eat northern sea oats!