The Old Farmer's Almanac - A great resource for all sorts of gardening and farming information
MIgardener - 100% Organic Gardening, Self-Sustainability, Healthy Recipes. This YouTube channel has many great videos on seed starting, pest control, composting, and much more.
You Bet Your Garden - NPR gardening podcast hosted by Mike McGrath. Topics covered include composting, advice for specific plants, and pollinator plants, and more!