Space tomatoes 2.5 to 3 feet apart in staggered rows. Extend the season Interplanting and succession planting also increase the yield from a small plot. A common way to interplant is to mix carrot and radish seeds in the same row or plot. Harvesting the early-maturing radishes thins the row, allowing growing space for the carrots. Thickly sow head lettuce or butterhead types, then pick them as leaf lettuce until they thin enough to allow heads to form.
Succession planting means using the same area to grow successive crops.
For example, as spinach, an early spring crop, is going to seed, remove it and plant beans, squash or peppers in the same spot, if the weather and soil temperature allow. Homegrown flavor and the fun of watching things grow can be even easier and more productive in raised beds. Please read it.