Growing daikon radish for the first time this year in zone 5. I bought Burpee daikon seeds (although it doesn't specify the cultivar) and direct-sowed them on 4/13. Leaves are growing large but it has started to bolt already. I pulled one plant to check out the below-ground progress. While the root is about 6" long, it's only 1/4" thick. Will they turn really bitter if I let them continue to grow? From a permaculture perspective, should I let them continue to grow even if not edible?