Dr. Ilya Perlingieri recommends we garden indoors this year, to avoid as much radiation contamination as possible. Another alternative is to dome garden. She also mentions several foods and supplements to lessen the impact of radiation exposure. (Also see Additional Support for Your Immune System)
Many experts also recommend specific foods and nutrients to counteract radiation exposure. See Melissa Patterson’s Supplements Shown to Help Prevent Effects of Radiation Fall-Out.
Japan is growing sunflowers to remediate the soil.
And experts recommend this combo filtration system to reduce the amount of radiation in your water.