Very small seeds can be a challenge to plant without ending up with thick clusters of plants that require extensive thinning after they sprout. Cut down on this problem by planting seed tape instead of loose seeds. Seed tape also makes a fun, easy project for kids who want to help with planting time.
Cut several 1 inch wide strips from paper towels and lay them flat on a table. Consult your seed packets for the amount of space to leave between each plant, and use a pencil to mark these intervals down the center of each strip.
Squeeze a small spot of white glue onto each mark and press a seed into each spot of glue. Lay the strips out on a flat surface to dry, checking every now and then to make sure they don't stick to the surface.
Roll up the strips and store them in envelopes if not planting immediately. Mark the envelopes so you know which seeds are stored in each one.
Dig a trench to the depth indicated on the seed packets and plant the seed tapes in the bottom. Cover the strips, firm the soil down over them and water them. Prevent the seeds from drying out before germination by placing strips of cardboard over the planted rows. Lift the cardboard strips every two or three days to check for sprouts; when the young plants break the soil surface, remove the cardboard. Thin the rows if needed; even with seed tapes, your plants may need minor thinning to allow them enough room.