Varieties with tiny seeds are also best sown indoors because they have a tendency to get washed away in heavy spring rains. Some seeds resent having their roots disturbed and prefer being sown where they will grow. Peas, corn, beans, root crops, sweetpeas, and nasturtiums are some that fall into this group. Make sure your containers are clean and free of any pests. You can make sure containers you are reusing are clean by soaking them in a one part bleach and five part water solution for a few minutes before planting.
Space is usually at a premium so it is best to use the commercial plastic seed starting flats.
They fit easily into carrying trays and because their size is uniform you will be able to fit more in a small space. To get your seeds off to a fast healthy start it is best to start your seeds in a soil-less growing medium. This will give you the best aeration for strong root growth and water retention with out water logging. These mixtures are usually a combination of vermiculite, perlite, and peat moss which really help in warding off damping off disease. Damping off is also spread by over watering, poor air circulation, high temperatures, and week light.