Starting seeds indoors can extend the growing season and let you choose varieties that may not appear as nursery starts. Success comes from matching each seed's instructions and keeping the setup simple enough to monitor every day.
Read the packet before planting
The seed packet is the primary guide for planting depth, timing, spacing, and temperature. Some seeds are pressed onto the surface, while others need to be covered. Some benefit from indoor starting, while others perform better when sown directly outside.
Use a clean container and seed-starting medium
Choose trays, cells, or small pots with drainage. A fine, clean seed-starting medium makes it easier for small roots to grow than heavy garden soil. Moisten the medium before planting so tiny seeds are not displaced by a strong stream of water.
Label immediately
Write the variety and planting date on a label as soon as the seed is sown. Similar seedlings can be difficult to identify, and clear labels make it easier to compare germination time and care needs.
Keep moisture consistent
The medium should stay evenly moist during germination but not waterlogged. A cover can slow evaporation, but remove or vent it after seedlings emerge and watch for excess condensation. Check daily; small cells can dry quickly under warm lights.
Provide strong light after germination
A bright window may work for some seedlings, but weak or one-sided light often produces stretched growth. If using a grow light, follow its height and timing instructions and adjust as seedlings grow. Give trays airflow and avoid crowding.
Thin, feed, and transplant carefully
If several seedlings share a small cell, thin them according to the packet instructions. Begin fertilizer only when appropriate for the seedling and product directions. Before outdoor transplanting, gradually acclimate seedlings to wind, brighter sun, and temperature changes rather than moving them outside all at once.
Choose a manageable first project
Start with a few varieties rather than dozens. Microgreens, culinary herbs, and straightforward vegetable seeds can help you learn moisture and light control. Shop the Seattle Seed Company collection or browse grow and propagation supplies.
For a broader supply checklist, use the Plant Care, Propagation and Growing Supplies Guide.
