Q.Plant Growth
We planted and transplanted these seeds according to directions, but it seems like the stems are not growing correctly. Our fennel radish turnip iceberg lettuce and broccoli all look like this. Can you tell us what we should do?

Certified GKH Gardening Expert
It appears that they may have been lacking just a little in light as a seedling. This can cause spindly stems. Another cause can be lack of silica in soil, but this will be extraordinarily rare.
I think that leaving them to continue on will be best, as long as a soil test confirms that there are no deficiencies. Here are some articles that will help you to test your soil:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm