How we grow big radish from seed We start in early Spring by sowing the seeds direcly in ground when soil has been thawed. Apply one inch layer of compost before planting Set seeds 1 inch apart, 1/4 inch deep and lightly cover with soil. Using a makeshift hoop cover, we cover the bed. This protects the seedling from frost Watering consistently will guarantee bulb formation When the weather gets too hot, vent out the cover or remove it. You can also switch to netting at this point to keep your pl