Posted: 27/08/2017 at 11:12
This is a pretty good description of what to do ...
Once your carrot seedlings are large enough to handle they will need thinning out to allow each carrot room to grow properly. This is best done in stages so that you have spare seedlings should slugs attack! For the first thinning aim to leave one seedling every 2-4cm, pulling out any in-between. About four weeks later you can further thin your carrots to a final spacing of 10cm (4in) - the thinnings taste delicious in salads. If you’re growing finger or baby carrots then a final spacing of 5cm will be sufficient."