Step 1: Sow Larger Seeds Individually in Each Pot
Fill the pots with multipurpose or seed compost, firm gently, and push the seed in to the correct planting depth. Label and water. Cover pots with clear plastic, or put in a propagator until the seeds germinate. Thin seedlings to leave a single plant in each pot. Keep pots moist and turn those on windowsills daily to stop plants growing toward the light.
Step 2: Move Hardened Off Plants to Larger Home
Harden plants off gradually in a cold frame or put them outside during the day and bring them inside at night. Plant them out into large pots before the roots become restricted, and water well.
Step 3: Use Watering Trays
Watering trays and pots by placing them in a tray of water is a great way to prevent seeds and seedlings being disturbed and to ensure compost is thoroughly moistened. Leave containers in water until the compost surface feels damp, then remove and allow to drain.
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Tender plants and half-hardy annuals and perennials are started indoors, since they need artificial warmth or frost-free conditions. The seeds of most hardy plants can be sown indoors, too, if you want closer control of their germination and early growth.