No more spotty turf, skimpy blooms, or stingy vegetable plants. If that's your mission, you're not alone: Homeowners spent over $6 billion on fertilizers in 2013. But randomly adding fertilizers won't produce a beautiful bounty; both plants and soil require a nutrient-rich diet targeted to their needs. Ahead, we answer your questions, troubleshoot problems, and guide you toward the ideal mix for your lawn, flowers, veggies, shrubs, and trees. You'll learn what to sprinkle, spray, mix in, and spread around for a garden that's the envy of the neighbors.