Turn over the soil in the garden with a tiller. Set the tiller to a depth of 3 to 4 inches.
Fill the spreader with a bag of crushed lime powder. Take note of the distribution level as indicated on the packaging, and set your spreader accordingly.
Position the spreader in a corner of your garden, and walk it straight across to the opposite corner. Once you reach the end, turn around and make an adjacent pass to your first. Continue back and forth across the garden until the lime has been evenly spread.
Gently rake the lime into the soil, being careful not to distribute the lime unevenly.