Is this Yarrow?

[Tortoiseboi]

Found this growing next to my Fairy Duster, wondering if my DT can eat it.

 

[Maro2Bear]

Your pix doesn’t appear like the Common Yarrow I’m familiar with. Your leaves aren’t as “feathery” as yarrow. But...I’ve been not quite correct before! @Iochroma is always good for a proper plant ID!

 

[Tortoiseboi]

Here is another picture if it helps

 

[Maro2Bear]

Yeah.... I don’t think yarrow. Yarrows leaves are much more feathery. I don’t see that in yours.

 

[Iochroma]

Not a yarrow of any sort.
Does it bleed a milky white sap? It may be a Euphorbia.