I'm pretty sure this is a weed since it's popped up with my perennials this year and it wasn't here last year, but I've never seen it before and am curious as to what it is. I'm new to gardening! Please let me know what you think, thanks!
Looks like a weed to me too. Probably Queen Anne's Lace, or wild parsnip - both large relatives to carrots and usually considered weeds.
Here is a link that might be useful: Lacy Weeds