an experiment

punkdocpunkdoc Sheffield, Derbyshire border.Posts: 6,187

I know that annual cornflowers are easy to grow, but as an experiment a few weeks ago I sowed half the seeds into normal MPC and half into a 50/50 mix with perite. The seeds have been in a cold greenhouse since. Today I removed some seedlings to give the others room to grow and it was very obvious that the ones grown in the perlite mix had a much better root system.

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  • figratfigrat Posts: 1,619
    Interesting. I've been adding vermiculite to my seed compost, but not in such a high ratio.
  • figratfigrat Posts: 1,619
    It's what I've got in the gh, will look out for perlite.

    I've always thought they were pretty much interchangeable?
  • artjakartjak Posts: 4,168

    What exactly does perlite do?

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