[BumbleJo]

Hi! I've grown some wallflower seeds in pots and haven't thinned them or potted them on so they are quite dense.  I've read you should plant them out end of August/September but these are at least 4 inches high now.  Would it hurt to plant them out now or hang on another month...didn't really want to pot them on singly as there are so many of them!  Cheers!

[New shoot]

I would plant them out.  They are hardy enough to cope and as long as you water them, they should be fine 

[BumbleJo]

Cheers Newshoot, will do!

[ARPoet]

You could also heel them in somewhere out of the way until you have abed or tubs ready for them.