They are fine to plant out. Smaller plants always tend to do better when it comes to transplanting and plants you've grown from seed yourself are the best plants to have. Just make sure they are going in well cultivated, well draining soil. You'll need to baby them for a few weeks keeping them well watered and weed free.

Space them at least 2 feet apart. Campanulas prefer evenly moist soils with good drainage and are at their best in climates with cool nights. Full sun or bright shade. They can be divided every 2 years, then you'll have more plants to give away or replant elsewhere.

thanks buddy, will they be alright outside over Winter ? I live near Manchester U.K.

Yes they will be fine. They will go dormant over winter, but come back again like gangbusters in the Spring. In the fall, cut the leaves and stems back 3 inches above the soil line then let them sleep.

It's best to plant them out sooner then later so they can root in before the cold weather gets here. That's key.
Those are nice plants, what color are they?

Thanks, I know they're blue as I remember the packet.

If they are still in the greenhouse I'd harden them off for a couple of weeks first - they look a bit drawn.At this time of year you could just stand the pots outside somewhere sheltered. I'd quarrel with Bathgate re cutting the leaves off where you live - if they don't want their leaves they will lose them on their own. No need to plant them together as they should make nice clumps on their own. They are edging or rockery plants so in your garden I'd go for the rockery. You can always move one later if you change your mind. Can you remember which variety they are?

When the foliage goes brown in the fall, cut it off 3 inches above the soil. Dead foliage harbors diseases, spores and insect eggs waiting to attack your plants when they emerge in the Spring. You are free to plant wherever you like as long as it has Sun/bright shade & good drainage, loose cultivated soil. They are quite adaptable. Plants don't talk.

Just to say C. carpatica do not flower continuously in summer. You get a big flush in June/July and after that flowering is rather sporadic if at all. Also slugs/snails love these young plants so I'd put pellets down after planting or or risk losing them. It happened to me.

Thanks B, just going out with the slug pellets now.

B,
Went out to check on my campanulas this morning - 12 large slugs dead or dying. Thank goodness you warned me.
Have just doubled up on the slug pellets.