Primroses

Hi, I have grown some primroses from seeds and they was lovely but now all the leaves have died and gone black and a yellow colour, could any one please tell me what the problem could be please, I have used verve multi purpose compost from b n q, thanks in advance

I had some that were inside a few years ago that were too wet as sunshineband suggested and they also developed a mould,i think mildew.Make sure that there is plenty of air circulating around/good ventilation and if its possible water them from below by standing them in water which will stop water collecting in the crown of the plant that will encourage rot/mildew

Primroses are usually described as herbaceous, although I think some are almost evergreen, including most of my motley collection.

The only thing that sometimes kills some of mine is summer drought, but they self-seed well enough not to worry unduly (except when they happily grow in the cracks between the paving slabs!  )