You have some great tips in this article. Powdery mildew is easy to find on tomato plants as it looks like someone brushed the leaves with a white powder. For example, a healthy tomato plant has softly fuzzed, medium-green leaves. My large area raised bed has this problem.
Get the Dirt
As tomatoes reach the half-grown stage, the fruits that may seem fine otherwise can begin to develop hardened brownish areas along the bottom. If your plants are already in the garden, you can simply shake the flowering branches to simulate wind and get the pollen from the stamens to the pistils. Spider Mites What they are: Follow these steps on growing tomatoes in a raised bed.