On 14 Aug 2013, at 19:24, J.E. Shields wrote: > I need advice on how to germinate seeds of Arum sp. from Eastern Europe. > > I have been soaking them in several changes of water since receiving them a week > or two ago. None have germinated so far, at least as far as I can tell by > looking. > > Do they need stratification to induce germination? The soaking was a good idea, but now they need to be sown in pots and put outside in a cold frame until they germinate next spring. A general rule, with a great many exceptions, is that seeds germinate around the same time mature plants of the same species leaf out in spring (or fall or whenever). -- Rodger Whitlock Victoria, British Columbia, Canada Z. 7-8, cool Mediterranean climate