Cerinthe seedling plug plants

in Plants
Ive just received some Cerinthe seedling plug plants in the post. Each plug has got 2 strong seedlings in it, would it be better to split these before potting on or just plant both seedlings togethe?
Life's tragedy is that we get old too soon and wise too late.
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They separate easily if you are gentle.
I bought these and then realised how prolifically they seed. Save the seed and yourself a fortune! They grow very easily and self seed easily. Good luck.
Thx, I did try growing them from seed myself but only 3 survived, I should have sown them in autumn to overwinter in cold frame.
I've only ever sown Cerinthe in the Spring. They do germinate quickly, once you bring them on and plant out they will be lovely huge plants, bee magnets as well.
That's one of my main reasons for growing them, I'll try again next year with the seeds I get from these plug plants, fingers crossed.
I would not separate them, as I have often found 2 shoots growing from a single seed.
When you don't even know who's in the team
S.Yorkshire/Derbyshire border
I've potted them on as they came, seemed a shame to split them when both shoots looked so strong.
Heres an article you may find interesting BS
http://higgledygarden.com/2012/08/08/cerinthe-seedling/
We planted some cerinthe plants about 10 years ago and they have self-seeded every year since. Now they are all over the garden but they are so attractive that we let them get on with the job.
https://www.flickr.com/photos/norwichhouse-oakridge/4389090733/in/photolist-7FReLa