What are these?

[Maggiethecat]

Seeds taken from a beautiful summer purple flowering plant that I don’t know the name of and trying to figure out when to sow.
Any help welcome!

Hard to see, and blurs when I zoom in, but are they segmented and come apart? I was thinking tree mallow at first glance, but only if they break into little segments.

Tried breaking them up but they are quite firm.
Does this pic help?

Excuse the ebay link but it has the images I'm after. I agree with pp, it's probably tree mallow.

https://www.ebay.co.uk/itm/196409603375?_ul=GB&rb_itemId=196409603375&rb_pgeo=GB&var=0&ff=11&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5339059258&toolid=10044&customid=EAIaIQobChMIv_HQ7eX6iwMV75VQBh2RiiB6EAQYASABEgJV7PD_BwE&gad_source=1&gclid=EAIaIQobChMIv_HQ7eX6iwMV75VQBh2RiiB6EAQYASABEgJV7PD_BwE

I agree, mallow.

Thank you!

Do the large seed heads need to be broken up for planting?

Yes I would. Normally when they are dry at the end of the season they tend to crumble into segments anyway.

Ok!