Amending your garden soil in early spring is key to having a healthy, productive tomato and vegetable crop this season. A good soil amendment will make your existing soil healthier and more fertile by improving soil texture, helping to lower pH (make your soil more acidic) and encouraging worms and microbes to flourish. Healthy soil encourages deeper root systems and makes nutrients more available to your vegetables. An easy way to improve your soil is with packaged products such as Earth Essentials Sheep, Peat & Compost. In this example, we're working on improving a 10 square foot (5' X 2') section which will be used to grow heirloom tomatoes this season. Nature's Yield Organic Compost and At this point, you can add some Peat Moss or Coconut Coir to the mix to help acidify the bed even more. Tomatoes and most plants do best when the pH is acidic, somewhere around 6.8. Your best bet to lower your soil's pH is with organic material such as compost, peat moss and coconut coir. It's also a good idea to incorporate a granular fertilizer such as Fertilome's Gardener's Special or Fox Farm Tomato and Vegetable Fertilizer. This will help feed your tomato and vegetable starts when you plant them.