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Seed Sowing Tips

Plant nursery York

Hardy perennials can be sown in seed trays, especially if you have lots of seed, the seed should be covered with horticultural grit and left outside in a protected place. They often need a period of cold to germinate and seed bought during the winter can be treated in the same way. Large seeds can be sown direct into pots and I often sow direct into plugs as this saves pricking out the seedlings. Stand the seed trays or pots in water rather than using a watering can.

Sowing Hardy Annual Seeds

Hardy annuals can also be sown in the same way only just cover the seed with compost rather than grit. If you have a propagator you can sow tropical or non-hardy plants, such as caster oil plants in March but these will need to go into a unheated greenhouse or frame to harden off. A frame is ideal as you can open up during the day, close at night and use fleece if frost is a problem.

  • Use clean pots
  • Use fresh compost
  • Don’t over water as this causes damping off
  • LABEL + date, some plants such as Peonies will take at least 2 years

When you collect your seed, keep in paper bags, labelled clearly.

I keep mine in a shoe box in the fridge, they must be kept cold, so none in the greenhouse or on a window ledge!