Extremely important to have the pH of the soil at 7ish. I bet you don't know your pH. You don't have to know. Bring in a tablespoon of your soil and we will test it for you (costs a few dollars). If your soil is acidic, we add lime to it. 50lbs raises the pH of 1,000 sqft of soil 3/4 of a pH point.
Why is it important?
Phosphorous (roots, fruits, and flowers) is needed for plant growth. It's already in the soil, but locked up in a chemical form unavailable to veggie plants at levels below 7.0. Solution is to raise the pH so whats already in the soil as well as whatever you add can be in a form that can be absorbed by the plant.
Plants and lawns that have an acidic soil are deprived in all ways and will be nothing but a disappointment, so lime your soil to bring the pH up to 7.0. When to do this? Any time of the year, all year long, doesn't matter. It takes a long time to change the pH and a long time for the lime application to wear off. Your soil will always revert back to it's original pH.
Our garden soils are already adjusted to a pH of 7 so when you buy them, you've got nothing to do.
If you do not check this you can have a garden anyway yet production might be hampered. Lime is CHEAP...