On the morning doggie walk noticed three plants growing along the side of the tapioca, now in pots in the garden.

Any idea please

Roselle ... I think

https://en.wikipedia.org/wiki/Roselle_(plant)

5 minutes ago, KhunLA said:

Roselle ... I think

Yep, it's a Thai Roselle.

 

Thanks for the info, usually I end up bringing a weed home

Grows easily from seed. Try eating the crisp red sepals (modified leaves, I think) around the actual flower bud. Fresh version of what is dried to make the roselle tea. Nice sour crunch.