I decided we would harvest the daikon radishes in the Truly Passive Greenhouse. The vegetables were nowhere near as impressive as the foliage...
Learning point for harvest or use of biennial plants that seed the second year. Once day length and warmth increase what has been stored in the root will be used to start an abundance of vegetative growth to produce the seed head.
So if root is the desired harvest it must be kept cold and dark. If greens is the desired harvest that can be done a small amount at a time until the seed stalk develops or al at once. If the seed is desired then limit the harvest of greens.
Due to poor planning some beets were very small so they were left to produce greens (and reds) and I will still get enough seeds for my needs.