Hollyhocks in pots

[greenscrump]

I have a couple of self sown hollyhocks that I transplanted into pots, intending to plant them out next spring.  They are doing really well but will soon have outgrown the pots.  Should I plant them out now or pot them on  ???  i wanted to keep them in pots as long as poss as most of the hollyhocks in the border have rust.

Any advice gratefully received!

[greenscrump]

[saddad]

I'd pot them up until the end of September...  :)

[greenscrump]

Thanks, Saddad - I'll put it on the to do list for tomorrow!