Carrots must be sown directly where you want them to grow (rather than in seed trays) as, like all roots crops, they resent being transplanted. It’s essential that they have deep, lumpfree soil to grow in and don’t sow carrots in compostrich soil or where manure has recently been dug in as that causes forked roots. Carrot seed is very fine so take your time carefully sowing the seed. Try not to sow it too thick, as you’ll need to thin out the seedlings later. And if you have cats, you’ll need to cover the seed row to stop them digging the seeds up before they sprout. Use bird netting or get a 30cm wide piece of chicken wire, as long as your row, and bend it in half to make a triangular-shaped cover to lay over the top. Sow carrots between rows of onions to help confuse the carrot rust fly, which is attracted to the smell of carrot foliage.