You can get a general idea of what type of soil you have just by looking at the types of weeds and plants that are growing in your lawn. For instance, creeping buttercups, chicory and dandelions love clay soil. Bindweed, sheep sorrel and goldenrod prefer sandy soils. Lamps quarters and chickweed love to root in loam soil. If you have hydrangea on your property you can easily find out what your soil’s pH levels are from the colors of the blooms. Pink blooms mean you have alkaline soil. Blue blooms means you have acidic soil.