I don't know your plan but I would say that they all want taking outdoors, and spaced a little further apart.
What I am frightened of is mildew forming due to the restricted air space around them.
I don't know if your plan is to grow them under cover till flowering time or what????
What size of pots are they in? it looks like somewhere around 6" diam based on the plant size, usually if growing chrysants in pots you use 8"-10" pots.
The problem when growing in pots outdoors is they often get blown over because the leaves/branches act as a sail.
To alleviate this problem you can erect what might best be described as a one or two strand wire fence and tie the plants into the wires.
Again because I do not know your plan I would restrict each plant to around three to four stems particularly as they are in smallish pots.
Now I have created another problem for you and that is " what stems do I remove"?
What you have to do is locate the point where the breaks (branches) radiate from, idealy you want them to radiate from the same point on the stem.
This ensures that if you want to cut them as 'cut flowers' or for showing that all the stems are around the same length.
Any stems that grow above this point should be removed as these are being starved by the branches below them, and what nutrients they do get is at the
expense of the selected branches.
By doing this you will get a better shaped, less crowded plant and when all three/four branches flower they will form a nice relatively large flat rosette
of flowers on top of the plant. Otherwise if you leave the higher stems on you will get a more 'spikey' head of flowers.
But at the end of the day the choice is yours, but in my opinion I would rather have three/four good heads of flowers rather than half a dozen not so attractive flowers.
As I say the choice is yours!
If you want any more advice please do not hesitate to ask, who know you and I might be educating a few lurkers on the site
ps. I would get your cutting potted up as well you do not want them to get pot bound as this might affect their keeping qualities over the winter months!
