What are these?
Looks a bit like my pet hate rosebay willowherb Sara but Loosestrife is similar so the one you planted could be that. If you wait till flowers start appearing it's easier to tell and if it's widespread in the garden it's more likely to be a weed. You could search those online and see if they look like what you have. Rosebay has violet/purple flowers and Loosestrife is purple or yellow flowering, though there is a white one too. Some Euphorbias are very similar too so that's an option for the 2nd one as well!
Can you take another pic of the first one from a bit farther away?