Well done, Wardy4! You don't say how you grew them but let's hope it wasn't luck. When I first met my ex I was a vegman and she was, and still is, a flower person. Then she got a job where she had to grow veg and asked my advice. I could help her with most common veg but said that caulies were always a failure for me because they always "blew". Undaunted she planted them really firmly and had great success. Since then I have been able to grow them under various unfavourable conditions. I have no idea what the technical reason is for brassicas needing firm planting but take the advice; beauty, brains and firm planting make for success at least in the garden!