Almost all the soils in our region benefit from an application of lime in the fall. If you haven't limed, do it now. Even acid-loving plants need calcium, which lime provides. I often lime lightly in beds where I will plant azaleas, for example. I have very acid, sandy soil under pines.
Growth is much better even for the azaleas with light liming.
The lime must be allowed to interact with soil for at least a month before planting azaleas and rhododendrons, however. In the vegetable garden, liming promotes health, vigor, thicker fruit walls, and more disease-resistant plants. Lime helps curb blossom-end rot in tomatoes. It helps plants take in fertilizer. It helps build stronger cell walls so that plants resist disease, drought, wind and insect pests more successfully.