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Re: Sylphium perfoliatum

We raised some Silphium terebinthinaceum seeds last year from Jelitto Seeds
in Germany, following their instructions.  However, Jelitto recommends a
different protocol for the S. perfoliatum, which is:
These seeds germinate rapidly depending on species and origin.  If
germination does not occur after 3-4 weeks, a cooling period of 2-4 weeks
is recommended.

Bill & Harvey
SKID  zone 6  CT  USA

>I was recently given some seeds of Sylphium perfoliatum (cup plant).
>Would appreciate getting some advice on how & when to germinate them.
>TIA,  Judy Showers (greenhouse grower in PA, z/6)
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