Carrots love full sun. What you did was give them too little light during the germination process, creating 'soft', tender foliage. Then you placed them in the full sun, frying the dickens out of them.

It would have been best to allow them to develop directly in the sun from the very beginning. That sun scald takes but a very short time, as you learned the hard way.

Hi I grow carrots in 2 liter containers 3 to a container. The carrots here are my 2nd harvest this year. I find that they will do nicely in bright light as well as full sun. I start mine in a light closet and transfer them to their pods soon after germinating. Many vegatable plants will do well in shadie spots, just watch their water consumption. In shade their susepable to root rot from to much. Like this week. Since everything in containers I just bring them in.
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