Hello.

It’s frustrating when things we plant don’t flourish the way we hope.

My first recommendation is to have the soil tested in the raised bed(s). That will help you know what (if any) amendments need to be added to the soil. The University of Minnesota’s Soil Testing Lab is the best place to get that done. Once you get the report, you’ll know the pH of your soil and you can review the various recommendations for pH levels for growing all of those vegetables (see Sources below). 

The second thing to consider is rotating the locations of the crops you grow. Each plant uses different nutrients from the soil, so when the same thing is planted in the same place year after year, the plants don’t get what they need from the soil.

Over-fertilizing and compacted soil can also be problematic to the root development in radishes. See the Growing and Care and Potential Problems section of this Iowa State article. 

All the articles I read reminded gardeners to thin the plants to the recommended distance on the seed packet and to provide consistent moisture for best results. For beets, thinning is especially important, according to Michigan State’s Extension. The same is true for carrots, according to the University of Minnesota’s Extension Services. Overcrowding of root vegetables can cause malformation. 

I hope these suggestions help you get the root vegetables you want from your garden.

Sincerely,

Julie

Sources:

https://soiltest.cfans.umn.edu/

https://extension.umn.edu/vegetables/growing-radishes

https://yardandgarden.extension.iastate.edu/how-to/growing-radishes-iowa

https://www.canr.msu.edu/resources/how_to_grow_beets

https://extension.umd.edu/resource/growing-beets-home-garden/

https://extension.umn.edu/vegetables/growing-carrots-and-parsnips#disorders-3180362