Poor light-but more info would be nice
The warmth is the problem, Emma. That's often needed to germinate seeds, but doesn't help after that, except for plants that need it, like tomatoes and peppers. You need to move the turnip seedlings to somewhere with plenty of light, but cooler (must be frost-free while they are young though.) A cold frame would be ideal. If you don't have one, seriously consider buying or making one - they are a real boon.
Hi Thankyou very much I have planted them up the allotment and made a clothe so fingers crossed thy will get though. Xxxxxx
It's not to late to start off more turnips, I haven't started mine yet as I was going to plant then later in the season as a winter veg to replace Kohl Rabi.
Much to my amazement, Kohl Rabi will germinate in a plastic GH in March, nice little seedlings now, not in the least bit leggy and ready to go out, an under rated vegtable in my mind and worth a try for a quick growing veg.
Thankyou I'm going to plant some more x