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Does anyone have any tips on germinating Rudbeckia laciniata? I have tried seed from a variety of sources, sown it indoors and out, with stratification and without, with bottom heat and without, covered and uncovered - and had no success whatsoever.

OihaneFdez
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    There's this: https://npn.rngr.net/renderNPNProtocolDetails?selectedProtocolIds=compositae-rudbeckia-1727 – Ecnerwal May 24 '22 at 15:33
  • Thank you. I don't have the resources for quite such fine control over the growing environment as that, but I can stratify in the fridge and then start in a heated propagator. Perhaps the issue is the different transition from winter to summer conditions between a continental climate like the UP and the maritime one here (Scotland). – OihaneFdez May 24 '22 at 15:49

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