Some seeds produce one product, radish, carrot, and onion are just a few. These also tend to produce a large number of seeds when allowed to go to seed. Other plants produce quite a bit more produce from one seed. Beans, fruit trees, tubers, squash, and tomatoes are some examples.
If you live in a climate with a long growing season, or have a year-around greenhouse, you can stagger planting dates so you can harvest just what you need, when you need it. For instance, this year tomatoes, onions, and peppers are going to ripen at the same time so they can be used to can Red Fish’s special salsa and marinara sauces.
Staggered planting of garden seeds requires planting. Consider whether or not the produce will freeze or can well. If not, you will need to consume what you grow or sell it locally as soon as possible. Radishes mature quickly, and taste lovely. But, they do not freeze or can well. Will you use them in salads only? How many salads will you make in a week? They require you to do some simple math about how many you will use each week and plant accordingly.
Staggering planting dates prevents you from wasting garden space, seeds, and precious water resources on plants that won’t get harvested or if they do get harvested, will go to waste because no one wants to eat that many radishes.