Planting Radishes Now?

I always check out the Old Farmer's Almanac as I work to layout my garden. And I was just reading it. I am amazed that it says that I can plant radishes outdoors from March 8 through March 30^th in my area. WOW! Much of our land is frozen with puddles and mud on top. No way an organic untreated seed would survive that. I do have a raised box garden and even though I think early March is not prudent, I am wondering if I can prep it out so I can  plant Radishes, Spinach, Peas, Carrots, and Onions the first week of April. I might also plant some Parsley and Dill seeds to see if some plants will come up. I guess the weather over the next few weeks will decide. It would be cool to plant the week after Easter - it would really bring the resurrection to life!