Plant id please!

[LIZS]

These are in a couple of small beds halfway down the garden! I may have planted them (and lost the label) or they self seeded. Both about waist height. Many thanks

On my plant app, the yellow one is coming up as Evening primrose and the other as Stemmacantha. The app is called Candide.

First is definitely evening primrose.

Thank you. Never thought evening primrose grew that tall!

Yes those look right, thank you. The brown heads(like pine cones) are supposed to open into purple flowers which is probably what I remember buying!

Don’t recognise the second, but those bracts suggest Daisy family, Asteraceae, in the branch that includes knapweed, cornflower, etc (mainly genus Centaurea). Stemmacantha has moved genus again, and is now Rhaponticum centauroides, but it used to be Centaurea pulchra, so apart from using a superseded name, the app looks to be right. “Pulchra” means “beautiful” so looks like you’re in for a treat!

Thank you. I'll update with a pic of the flowers when they bloom

I think the plant on the right is Centaurea macrocephala. I don't know Rhaponticum centauroides but image search comes up with something very different looking so pretty sure it isn't that.

The second plant has flowered yellow!

Centaurea macrocephala, then. “Macrocephala” means “big head”. As a member of the daisy family, each of those yellow “petals” is in fact an entire flower, so what you have there is not a flower, but a head (involucre) of about a hundred flowers.