- biennial seeds of choice
- horticultural grit
- compost or well-rotted manure
- watering can or garden hose
- gardening fork
Step 1: Remove Weeds and Stones from Soil Before Sowing
Work organic matter, such as well-rotted manure or compost, into heavy clay soils. Rake it to make an even surface. Sow seed thinly and evenly, and then water.
Step 2: Wait for Seedlings to Grow
When they reach 2 inches (5 cm) tall and have a few leaves, lift them carefully with a hand fork. Retain plenty of soil around the roots. Water the soil around the plants thoroughly an hour before lifting.
Step 3: Replant 6–8 inches Apart, Firming Them With Your Fingers
Keep them well watered in summer. If they are not in their final position, you can replant them again in the fall.
Step 4: Plant in Sunny Borders with Tulips and Other Spring Bulbs or in Container
Many biennials do not like excessive rain, so protect them with a tarp during wet periods.
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Annuals and biennials look more natural if sown in informal swaths, or drifts, that merge into one another.