Posted: 24/05/2015 at 14:39
I wouldn't wait.
I'd cut the chives hard back so they're only a couple of inches tall, chop them up and use them in scrambled eggs, omelettes, potato salad - whatever you can think of. Absolutely delicious. You can break the flowers up and use them to decorate a green salad too.
Then disentangle the roots of the mint from the roots of the chives.
Repot the chives in fresh compost - if there are quite a few you could probably divide them and make two pots of chives - I find they tend to spread to fill the space available. They'll soon re-grow and give you lots more chives to eat.
Pot the mint in its own (large) pot.
Or of course, both of them could go in the garden - but for mint I sink a large bottomless pot into the ground, leaving the rim about 3" out of the soil, and plant the mint in that - to keep it under control